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Journal articles on the topic 'Fiber-optic communication system'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Ramesh, Raju, Dharmaraj Sathianarayanan, Vittal Doss Prakash, Arumugam Vadivelan, Sethuraman Ramesh, Gidugu Ananda Ramadass, and Malayath Aravindakshan Atmanand. "Failure Analysis of Fiber Optic Communication System in Deep-Water Remotely Operated Vehicle ROSUB 6000." Marine Technology Society Journal 48, no. 3 (May 1, 2014): 63–72. http://dx.doi.org/10.4031/mtsj.48.3.11.

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AbstractSingle-mode fiber optic systems can play vital roles in cabled deep-water vehicle operations at greater depths (>3,000 m). One kind of single-mode fiber optic system, the ROSUB 6000, is used in a deep-water work-class remotely operated vehicle (ROV). Fiber optic link failure of ROV telemetry and sound navigation and ranging were noticed at a water depth of 3,050 m during the ROSUB 6000 system sea trials. A failure analysis of the fiber optic communication system was carried out with the link data logged during different phases of the deep-sea trials. The results from the failure analysis carried out during deep-sea trials showed an increase in the fiber optic link loss from a depth of 900 m onwards. Further analysis of the fiber optic link loss in the laboratory involved pressure and low-temperature testing of all the subsea components in the ROV telemetry link. From the laboratory pressure test results, it was concluded that pressure was not the root cause of the fiber optic link failure. On further analysis, a complete fiber optic link failure was noticed during the low-temperature testing of the subsea components. Furthermore, the low-temperature testing of the individual subsea components revealed that the fiber optic rotary joint (FORJ) insertion loss increased rapidly at low temperatures. This FORJ insertion loss led to complete failure of the fiber optic links in the ROV. The degradation of index-matching fluid in the FORJ was identified to be the root cause of fiber link failure.

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2

Kiasaleh, K. "Fiber optic frequency hopping multiple access communication system." IEEE Photonics Technology Letters 3, no. 2 (February 1991): 173–75. http://dx.doi.org/10.1109/68.76880.

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3

Guzowski, Bartlomiej, Roman Gozdur, Mateusz Lakomski, and Lukasz Bernacki. "RFID monitoring system of fiber optic connectors." Circuit World 43, no. 1 (February 6, 2017): 32–37. http://dx.doi.org/10.1108/cw-10-2016-0041.

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Purpose The purpose of this paper is to develop identification system for fiber optic connectors in passive distribution cabinets. The system should have alternative power supply and wireless communication unlike the identification systems commercially available, which will make the system fully autonomous. Design/methodology/approach Detailed project and realization of real demonstrator of fully autonomous identification system. After the realization of the demonstrator, its optimization was performed. Findings It is possible to build fully autonomous identification system which requires 15.6 mJ energy to perform one cycle of identification process. Moreover, it is possible to use the alternative power method to supply this system. Originality/value Fully autonomous identification system of fiber optic connectors with alternative power supply and wireless communication.

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4

Zhuang, Qiu Hui, Xiu Hua Fu, Guo Jun Liu, and San Qiang Wang. "Phonetic Transmission System Design Based on Fiber Optic Communication." Applied Mechanics and Materials 278-280 (January 2013): 2073–76. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.2073.

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With the coming of information society, the development of optical communication technology is highlighted particularly, modern communication technology has become the most important part of. This paper introduces the prospects of fiber optic communication, principle and technical features. In the system design, detailed introduced the fiber optic communication technology as the core, for voice transmission system in which audio signals are generated, then the road filter, audio amplifier, data acquisition unit circuit design. In this paper including system each composition unit selection as well as the ultimate design method, and make the circuit debugging the system summary.

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5

Lau, Kam Y., David M. Cutrer, John B. Georges, and Simon Yeung. "Fiber Optic Infrastructure for Wireless Communication Networks." International Journal of High Speed Electronics and Systems 08, no. 02 (June 1997): 233–46. http://dx.doi.org/10.1142/s012915649700007x.

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It is clear that to meet the new demands of wireless customers, conventional cellular service providers and upcoming Personal Communication Service (PCS) providers for conventional phone service and high bandwidth wireless LAN must upgrade their networks to provide complete radio coverage. This evolution has motivated the need for low-cost systems that transport radio signals to and from areas of poor signal coverage. The most important area where this problem must be solved is inside of buildings, since this is where people spend most of their time. Unfortunately, the in-building enviroment is also the ost challenging area to provide radio coverage due to severe attenuation and multi-path effects. The problem must be tackled from the viewpoint of optimization of performance/cost ratio of the network. In this paper, we describe a system-level approach to tackle this problem. We demonstrate how one can trade-off hardware performance, which represent cost, with proper choice of system architecture which includes, among other factors, in-buiding radio environment, to arrive at an optimum network solution technically and economically.

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6

Qu, Zhen, Ivan B. Djordjevic, and Jon Anderson. "Two-Dimensional Constellation Shaping in Fiber-Optic Communications." Applied Sciences 9, no. 9 (May 8, 2019): 1889. http://dx.doi.org/10.3390/app9091889.

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Constellation shaping has been widely used in optical communication systems. We review recent advances in two-dimensional constellation shaping technologies for fiber-optic communications. The system architectures that are discussed include probabilistic shaping, geometric shaping, and hybrid probabilistic-geometric shaping solutions. The performances of the three shaping schemes are also evaluated for Gaussian-noise-limited channels.

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7

Kononov, V., O. Kononova, and I. Odinokii. "DESIGNING THE PRINCIPAL TRANSMISSION SCHEME FIBER OPTIC DEVICE FIBER OPTICAL GYROSCOPE." Системи управління, навігації та зв’язку. Збірник наукових праць 6, no. 58 (December 28, 2019): 28–32. http://dx.doi.org/10.26906/sunz.2019.6.028.

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The subject of the article is the fiber-optic fiber-optic gyro system used in inertial navigation, control and stabilization systems. The purpose of the article is to study the design of the schematic diagram of the transmitting device of the optical fiber system and to make the necessary calculations for the transmitting device of the optical fiber system. Problem to be solved is the justification of technical solutions, the implementation of which in the practice of measurement will allow to substantiate the process of designing the schematic diagram of the transmission device of the fiber-optic system of the fiber-optic gyroscope used in inertial navigation, control and stabilization systems. The article deals with: stages of designing the schematic diagram of the transmitting device of the fiber optical system; certain calculations have been made regarding the damping of the site in relation to the designed single-fiber communication system; diagram of the optical transmission device under development. Conclusions: It is advisable to use the proposed technical solutions both in the modernization of existing fiber-optic gyroscopes and in the creation of perspective samples intended for use in inertial navigation, control and stabilization systems

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8

Song, Wei, Shi Quan Qiao, Xiao Lin Zhang, Shu Hai Wang, and Shu Wang Chen. "Optical Fiber Dispersion Compensation Based on Optic System." Applied Mechanics and Materials 635-637 (September 2014): 1090–93. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.1090.

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In the optical fiber communication system of high-speed and large capacity, the dispersion is one of the main technical indicators. The dispersion causes the light pulse broadening, so it leads to the distortion of signal transmission and BER (bit error rate). The main research is the single-mode optical fiber dispersion compensation. The design and performance of system structure on the dispersion compensation fiber communication system is accomplished by using of the optic system optical fiber communication system simulation. Through the analysis of system structure and the research of the performance of the key components of the system, the output signal waveform is simulated and the influence of the output signal waveform by the system structure and key components performance of the receiving end is compared. The design can reduce the system dispersion.

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9

Li, Jian, Shuang Zhang, and Yi He Liu. "Electro Optic Methods in Intra-Body Communication System." Applied Mechanics and Materials 380-384 (August 2013): 3517–21. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3517.

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Intra-body communication is proposed by Zimmerman in 1995 and the galvanic coupling has been observed to be the best method for data transmission. With the increasing transmission requirements and the development of optical fiber communication, a high speed system is possible to be designed based on the Electro optic methods. In this paper, the characteristics of the intra-body communication system are introduced. Principles and structures of optic modulation for intra-body communication are reviewed. Internal and external modulation methods are introduced and discussed. A system of the electro optic modulation is recommended and discussed.

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10

Novkinić, Bekir, Igor Vujović, and Joško Šoda. "Marine Environment Influence on Fiber Optic Systems Operation." Transactions on Maritime Science 4, no. 1 (April 20, 2015): 23–34. http://dx.doi.org/10.7225/toms.v04.n01.003.

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Optic communications are increasingly used in many areas, including traffic and maritime nowadays. There is a lack of researches about environmental parameters impact to the operation of fibers in traffic systems, i.e. ships, cars, aircraft or port logistics. This paper investigates environmental influence on three-layer fiber optic system. The two-layer optic system is also analyzed for the comparison purposes. Several environmental factors were simulated, including temperature, pressure, and humidity for all three IR windows. In the three layer optic system, the environmental influence is brought through the air’s refractivity index. The final goal is to determine if the change of the environmental factor(s) can change or lose some of the modes used for communication in some specific application.

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11

Shi, Hong, Yan Lin, Sean Carney, Aaron Zygmunt, and John R. Thompson. "Nonlinear crosstalk in a multichannel fiber‐optic communication system." American Journal of Physics 63, no. 11 (November 1995): 1033–38. http://dx.doi.org/10.1119/1.18053.

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12

Sabapathi, T., and S. Sundaravadivelu. "Analysis of bottlenecks in DWDM fiber optic communication system." Optik 122, no. 16 (August 2011): 1453–57. http://dx.doi.org/10.1016/j.ijleo.2010.08.023.

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13

Huang, H. K., R. H. Tecotzky, and Todd Bazzill. "A fiber-optic broadband CT/MR video communication system." Journal of Digital Imaging 5, no. 1 (February 1992): 20–25. http://dx.doi.org/10.1007/bf03167820.

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14

Davydov, Roman, Valery Antonov, Sergey Makeev, Yury Batov, Valentin Dudkin, and Nikita Myazin. "New high-speed system for controlling the parameters of a nuclear reactor in a nuclear power plant." E3S Web of Conferences 140 (2019): 02001. http://dx.doi.org/10.1051/e3sconf/201914002001.

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The necessity of modernizing current control systems for functional units of a nuclear power plant, as well as the development of new control systems with a high degree of reliability and speed, is substantiated. The advantages of using optical sensors and fiber-optic communication lines to solve these problems are noted. Cases for which it is necessary to develop new fiber-optic sensors for monitoring parameters, for example, the flow of coolant or feed water, are considered. In some of them, it is more expedient to use standard designs of fiber-optic sensors to control the operating parameters of various blocks, for example, to control the electric field strength. A device and a control scheme for the parameters of the units and systems of a nuclear power plant using fiber-optic communication lines have been developed. The results of measuring various parameters of a nuclear reactor are presented. They showed that our proposed fiber-optic control and monitoring system for nuclear power plants operates more reliably and efficiently than systems with analogue control and measurement channels. The use of fiber-optic systems allows real-time remote control and high-speed control in terms of issuing commands to devices. This is very important when servicing a nuclear power plant while it is operating in extreme conditions.

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15

Hussein Ali, Adnan, Hayder Jasim Alhamdane, and Begared Salih Hassen. "Design analysis and performance evaluation of the WDM integration with CO-OFDM system for radio over fiber System." Indonesian Journal of Electrical Engineering and Computer Science 15, no. 2 (August 1, 2019): 870. http://dx.doi.org/10.11591/ijeecs.v15.i2.pp870-878.

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<span>The optical communication and wireless networks can be integrated to increase the capacity and mobility with decrease the costs in the access networks. Optical communication is considered a Fiber optic communication that can be used for wired and wireless communication. The problems of Fiber optic communication have a solution represented by Radio over fiber (RoF) which can control many base stations (BSs) that connect to a central station (CS) with an optical fiber. The Coherent optical OFDM (CO-OFDM) have concerned a great interest due to the high spectral efficiency and strength to the fiber dispersion, also it can be considered as a promising candidate when used in long haul optical fiber transmission systems. The integration of the wavelength division multiplexing system (WDM) with (CO-OFDM) system for increasing the system performance as well as achieving high data rates. The simulation of WDM-ROF and (WDM-CO-OFDM) with an optisystem simulator to analyze the RF spectrum, spectrum signal visualizers, and constellation diagrams. The proposed of integration of WDM and RoF-OFDM system is to achieve 100 km fiber length using 4QAM sequence bit, and the received power with electrical and optical amplifications by using 10 Gbps data signal.</span>

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16

Su, Liang Yu. "LabVIEW Applications for Fiber-Optic Remote Test and Fiber Sensor Systems." Applied Mechanics and Materials 610 (August 2014): 216–20. http://dx.doi.org/10.4028/www.scientific.net/amm.610.216.

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This paper demonstrates applications of LabVIEW in automatic test measurement of fiber optic system.First,the LabVIEW applications in fiber optic system and the basics of instrument connectivity are presented.Then,the aspects of hardware communication to external instruments through GPIB and serial interfaces are analyzed.Next,self-calibrating automated characterization system for depressed cladding applications is demonstrated utilizing the LabVIEW’s GPIB interface. Results of the manual and automatic measurements and the analysis of the measurement trace obtained from the optical time domain reflectometer (OTDR) are shown.In the end,two applications of LabVIEW in fiber optic sensor system are discussed.

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17

Chen, Jing Xia, and Meng Li. "The Performance of Eye Diagrams and Bit Error Rates of Optical Fiber Communication System." Advanced Materials Research 811 (September 2013): 558–63. http://dx.doi.org/10.4028/www.scientific.net/amr.811.558.

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In order to better understanding of the process of optical fiber transmission, a software package which called VPI will be developed to help to investigate the characteristics of the individual communications system components. The system includes source, transmitter, fiber, attenuator, amplifier and receiver that examine and interpret the whole system performance imposed by attenuation and dispersion, conduct the system design and performance analysis at the end. To further reinforce the analysis of experimental process in the fiber optic communications, the bit error rate (BER) will be introduced that enables to evaluate the signal quality performance by examining eye diagram, and explore the bit-rate value imposed on communication systems by noise, attenuation and dispersion. This paper will discuss the design procedure and experimental results associated with particular emphasis on BER.

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18

Li, Jian, and Shuang Zhang. "Electro Optic Conversion Methods in Intra-Body Communication." Applied Mechanics and Materials 513-517 (February 2014): 4458–61. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.4458.

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Galvanic coupling method has been observed to be the best method for data transmission in intra-body communication, which is proposed by Zimmerman in 1995. With the increasing transmission requirements and the development of optical fiber communication, a high speed data transmission system is required and it is possible to design an apparatus to realize the electro optic conversion. In this paper, the characteristics of the intra-body communication system are introduced. Principles and structures of the electro-optic modulation methods for intra-body communication are reviewed. Internal and external modulation methods are introduced and discussed. A system of the electro-optic and acousto-optic modulation are recommended for the intra-body communication system and discussed.

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19

Lai, Wen Qin, Zhi Hua Yang, and Chun Yu Liu. "The Power Cable Online Monitor and Protect in Application System." Applied Mechanics and Materials 742 (March 2015): 221–25. http://dx.doi.org/10.4028/www.scientific.net/amm.742.221.

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】 The solution of power optical cable online monitoring and cable protection equipment roasted the perfect combination of applications,which can be solved for fiber optic cable line protection, fault location and reduce equipment loss, improve security. Through optical protection equipment improvement, it can increase light protected internal OTDR monitoring channel to achieve the protection of optical communication services and the safeguard of the route line monitoring standby position, and the loss from the original equipment involved 7dB down 3dB, which effectively improve safety and quality of electric power communication optical fiber communication network, and improve management of power optical fiber communication network.

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20

Han, Di, and Hai Xia Li. "Fiber-Optics Data Transmission for a Gyro Stabilized Platform." Applied Mechanics and Materials 568-570 (June 2014): 1298–302. http://dx.doi.org/10.4028/www.scientific.net/amm.568-570.1298.

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An optical fiber based data transmission link for a four-axis gyro stabilized inertial reference system is presented. The operation and configuration of the gyro stabilized platform is introduced to explain the requirement of data transmission. Four passive fiber optic rotary joints (FORJs) instead of traditional electrical sliprings are used to transmit optical signals between these relatively rotating gimbals. The hardware and software design of this optical fiber communication system operated at an updating rate of 1kHz are described to achieve high-speed, real-time, reliable data transmission. The experimental results show that the fiber optic rotary joint-based data transmission link is real-time and reliable. The use of FORJs as fiber optic sliprings will also result in an extremely low friction torque by comparing to electrical slipring assemblies. This allows the system designer to optimize the servo control performance for such high-precision gyro stabilized inertial reference systems.

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21

S.K., Raghuwanshi, Vikram Palodiya, Ajay Kumar, and Santosh Kumar. "EXPERIMENTAL CHARACTERIZATION OF FIBER OPTIC COMMUNICATION LINK FOR DIGITAL TRANSMISSION SYSTEM." ICTACT Journal on Communication Technology 05, no. 01 (March 1, 2014): 868–76. http://dx.doi.org/10.21917/ijct.2014.0123.

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22

Meenakshi, M., and V. C. Ravichandran. "Performance Analysis of Fiber Optic CDMA Communication System with Modal Noise." Journal of Optics 26, no. 4 (December 1997): 167–80. http://dx.doi.org/10.1007/bf03549328.

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23

Minaev, V. A., I. D. Korolev, O. A. Kulish, and A. V. Mazin. "MODELING OF FIBER-OPTIC COMMUNICATION CHANNEL FOR QUANTUM CRYPTOGRAPHIC SYSTEMS." Issues of radio electronics, no. 4 (May 10, 2019): 90–95. http://dx.doi.org/10.21778/2218-5453-2019-4-90-95.

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The existing methods of information delivery to the strategic and tactical management of many government agencies are expensive, not always reliable and efficient. Therefore, quantum cryptographic systems (QCS) have been actively developed in recent years. However, there are problems with the use of the QCS associated with the reliability of information transfer. First, the existing fiber-optic communication channels (FOCC) are not designed to transmit single-photon signals, which leads to the complexity of their cryptographic protection. The second is insufficiently methodically developed calculation of energy losses and errors in the evaluation of the characteristics of information transfer in FOCC QCS. In article the analysis of the energy loss factors in the classical fiber-optic channel is carried out and the additive loss formula is discussed in detail. Then we consider the fiber-optic channel of quantum information transmission with the use of integrated optical devices. The additive formula of optical losses in such a channel is discussed. The features of losses in integrated optical devices are shown. The features of quantum cryptographic system of information transmission are considered. As a result, the model of FOCC QCS taking into account energy losses is presented, which allows competently in theoretical terms and visualize the passage of information through modern quantum cryptographically secure telecommunications while providing control in government structures.

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OBARA, MASAO, and JUNKO AKAGI. "THE DESIGN AND FABRICATION OF HIGH-SPEED HBT CIRCUITS FOR FIBER-OPTIC COMMUNICATION SYSTEMS." International Journal of High Speed Electronics and Systems 05, no. 03 (September 1994): 253–74. http://dx.doi.org/10.1142/s0129156494000139.

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AlGaAs/GaAs heterojunction bipolar transistor (HBT) high speed ICs have been paving the way for the most sophisticated fiber-optic communication systems since the late 1980s. Recently 20 Gbps HBT ICs have been developed to accommodate the emergence of optical fiber amplifiers. HBT technology is now proceeding towards the development of 40 Gbps systems where the lack of high speed measurement system remains an issue.

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25

Ishii, Y., K. Tsukamoto, S. Komaki, and N. Morinaga. "Coherent fiber-optic microcellular radio communication system using a novel RF-to-optic conversion scheme." IEEE Transactions on Microwave Theory and Techniques 43, no. 9 (1995): 2241–48. http://dx.doi.org/10.1109/22.414570.

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26

Fujishima, Minoru. "Study on sub-terahertz-band wireless system with fiber-optic speed." Impact 2020, no. 1 (February 27, 2020): 41–43. http://dx.doi.org/10.21820/23987073.2020.1.41.

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In the age of connectivity in which we live the ability to access information and data is expected. The Internet revolutionised nearly every aspect of our lives. Everything from travel, to shopping, staying informed, connected to loved ones and even finding new love, has all been uploaded and is performed online. The ingenious innovations behind these programs, apps and devices that keep us in constant contact, the smartphones and tablets, would never have been possible without first a network infrastructure for them to tap into. Communications networks allow anyone with the right device to connect to the invisible mass of data criss-crossing the planet. With the advent of 5G this network is set to get a massive upgrade which means faster transmission and reception of our online activities. This advance demonstrates the near constant improvement of communications networks since their advent. However, we are headed for a fork in the road where certain limitations will force us to choose whether the future is wired or wireless. Professor Minoru Fujishima, an expert in semiconductor electronics, is investigating the terahertz communication technology using silicon integrated circuit technology that supports mass production.

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27

Wang, Wei, Hui Deng, Wen Shen, Qi Gui Yao, and Xiang Qun Wang. "Remote Communication System for Transmission Line Monitoring Based on CMA." Applied Mechanics and Materials 423-426 (September 2013): 2655–58. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.2655.

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This paper studied application of fiber-optic and wireless communication technology in remote communication system for transmission line based on CMA and proposed the typical design scheme for different applications. The design of CMA which realized monitoring data centralized and upload had been given. The remote communication system used OPGW communication scheme had been constructed and run well, which has important significance for the construction of transmission line monitoring system.

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Wang, Feng, Li Zhen Feng, and Kuan Wang. "Poincare Sphere Method in the Analysis of Fiber Polarization Mode Dispersion." Applied Mechanics and Materials 203 (October 2012): 504–8. http://dx.doi.org/10.4028/www.scientific.net/amm.203.504.

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With the continuous improvement of the optical fiber communication rate, polarization mode dispersion (PMD: Polarization mode dispersion) is gradually depth. PMD will cause the light pulse signal wide during transmission, and in the signal transmission process continuous accumulation, damage to the transmission performance of the system, limit the system's transmission rate and transmission distance, PMD began to be the main obstacle which constrained optical fiber communication system upgrade and further development. PMD is a random value and difficult to calculate and test in the actual optical fiber communication systems. Poincare method is intuitive, easy to understand, easy measurement to study the characteristics of the PMD, and avoid a lot of tedious calculations. In the paper, analysis the single-mode fiber and its PMD, and the polarization state transmission process of polarization maintaining fiber and its nonlinear effects using the Poincare method, and simulate PMD characteristics by using Matlab software. Based on these, introduce the measurement principle of an improved Poincare method. Analysis showed that the Poincare sphere is a unique method in the analysis of fiber-optic polarization state transmission. Poincare method for the study of polarization mode dispersion has become an important direction of today's communications field.

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McMahon, D. H., and W. A. Dyes. "Self-heterodyne multiterminal system concepts for frequency division multiplexed fiber-optic communication." Journal of Lightwave Technology 6, no. 7 (July 1988): 1162–70. http://dx.doi.org/10.1109/50.4112.

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Sahu, Amaresh Ku, Susanta Kumar Patro, B. Srinivas Rao, and Sraddha Suman Patro. "Analysis of Gaussian and Rectangular Modulated Pulse in Fiber Optic Communication System." International Journal of Engineering Trends and Technology 29, no. 7 (November 25, 2015): 341–43. http://dx.doi.org/10.14445/22315381/ijett-v29p264.

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31

Osburn, G. D., and R. G. Arnold. "Application and testing of a fiber optic communication system at Grand Coulee." IEEE Transactions on Energy Conversion 3, no. 1 (March 1988): 1–5. http://dx.doi.org/10.1109/60.4191.

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32

Meenakshi, M., and V. C. Ravichandran. "Performance analysis ofM-ary orthogonal signaling in fiber-optic CDMA communication system." Microwave and Optical Technology Letters 16, no. 6 (December 20, 1997): 390–93. http://dx.doi.org/10.1002/(sici)1098-2760(19971220)16:6<390::aid-mop17>3.0.co;2-4.

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33

BISWAS, ANJAN. "SOLITON–SOLITON INTERACTION IN OPTICAL FIBERS." Journal of Nonlinear Optical Physics & Materials 08, no. 04 (December 1999): 483–95. http://dx.doi.org/10.1142/s0218863599000369.

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In an optical communication system it is necessary to place the solitons close to one another to increase the information carrying capacity of the fiber. The theory of soliton–soliton interaction in a fiber optic communication system, through a single channel, is studied in this paper. In presence of the perturbation terms, the two soliton interaction of the Nonlinear Schrödinger's Equation is investigated. It is analytically proved and numerically supported that the perturbation terms lead to the suppression of the interaction of solitons through an optical fiber.

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Меkhtiyev, А. D., E. G. Neshina, P. Sh Madi, and D. A. Gorokhov. "Automated Fiber-Optic System for Monitoring the Stability of the Pit Quarry Mass and Dumps." Occupational Safety in Industry, no. 4 (April 2021): 19–26. http://dx.doi.org/10.24000/0409-2961-2021-4-19-26.

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This article ls with the issues related to the development of a system for monitoring the deformation and displacement of the rock mass leading to the collapse of the quarry sides. Monitoring system uses point-to-point fiber-optic sensors. Fiber-optic sensors and control cables of the communication line are made based on the single mode optical fibers, which allows to measure with high accuracy the deformations and displacements of the rock mass at a distance of 30-50 km. To create fiber-optic pressure sensors, an optical fiber of the ITU-T G. 652.D standard is used. Laboratory sample is developed concerning the point fiber-optic sensor made based on the two-arm Mach-Zender interferometer using a single mode optical fiber for monitoring strain (displacements) with a change in the sensitivity and a reduced influence of temperature interference leading to zero drift. The article presents a mathematical apparatus for calculating the intensity of radiation of a light wave passing through an optical fiber with and without mechanical stress. A laboratory sample of single mode optical fibers based on the Mach-Zender interferometer showed a fairly high linearity and accuracy in the measurement and can be used to control the strain of the mass after appropriate refinement of its design. Mathematical expressions are also given for determining the intensity of the light wave when the distance between the fixing points of a single mode optical fiber changes depending on the change in the external temperature. A diagram for measuring strain using a point fiber-optic strain sensor is developed. Hardware and software package is developed, which can be used to perform a number of settings of measuring channels. The work is aimed at solving the production problems of the Kenzhem quarry of AK Altynalmas JSC.

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Polyakov, A. V., and M. A. Ksenofontov. "High-voltage monitoring by the fiber-optic recirculating measuring system." Izmeritel`naya Tekhnika, no. 2 (2020): 38–44. http://dx.doi.org/10.32446/0368-1025it.2020-2-38-44.

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Optical technologies for measuring electrical quantities attract great attention due to their unique properties and significant advantages over other technologies used in high-voltage electric power industry: the use of optical fibers ensures high stability of measuring equipment to electromagnetic interference and galvanic isolation of high-voltage sensors; external electromagnetic fields do not influence the data transmitted from optical sensors via fiber-optic communication lines; problems associated with ground loops are eliminated, there are no side electromagnetic radiation and crosstalk between the channels. The structure and operation principle of a quasi-distributed fiber-optic high-voltage monitoring system is presented. The sensitive element is a combination of a piezo-ceramic tube with an optical fiber wound around it. The device uses reverse transverse piezoelectric effect. The measurement principle is based on recording the change in the recirculation frequency under the applied voltage influence. When the measuring sections are arranged in ascending order of the measured effective voltages relative to the receiving-transmitting unit, a relative resolution of 0,3–0,45 % is achieved for the PZT-5H and 0,8–1,2 % for the PZT-4 in the voltage range 20–150 kV.

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Isnawati, Anggun Fitrian, Riyanto Riyanto, and Ajeng Enggar Wijayanti. "Pengaruh Dispersi Terhadap Kecepatan Data Komunikasi Optik Menggunakan Pengkodean Return To Zero (RZ) Dan Non Return To Zero (NRZ)." JURNAL INFOTEL - Informatika Telekomunikasi Elektronika 1, no. 2 (November 10, 2009): 1. http://dx.doi.org/10.20895/infotel.v1i2.65.

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Fiber optic has characteristics for optical transmission system. One of optical characteristics is pulse broadening, known as dispersion. The dispersion is a condition where pulse in output side is larger than pulse in input side. It means that pulse broadening had happened. In the communication system, it’s known as inter symbol interference (ISI). Effect of Inter symbol interference increasing the error bit or BER value. In optical communication system, dispersion is most influence to the data rate that fiber can support. Besides, bandwidth, information capacity, transmission distance, wavelength and fiber type can also influenced by the dispersion.

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Phillips, Brennan T., Nicholas Chaloux, Russell Shomberg, Adriana Muñoz-Soto, and Jim Owens. "The Fiber Optic Reel System: A Compact Deployment Solution for Tethered Live-Telemetry Deep-Sea Robots and Sensors." Sensors 21, no. 7 (April 4, 2021): 2526. http://dx.doi.org/10.3390/s21072526.

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Tethered deep-sea robots and instrument platforms, such as Remotely Operated Vehicles (ROVs) and vertical-profiling or towed instrument arrays, commonly rely on fiber optics for real-time data transmission. Fiber optic tethers used for these applications are either heavily reinforced load-bearing cables used to support lifting and pulling, or bare optical fibers used in non-load bearing applications. Load-bearing tethers directly scale operations for deep-sea robots as the cable diameter, mass, and length typically require heavy winches and large surface support vessels to operate, and also guide the design of the deep-sea robot itself. In an effort to dramatically reduce the physical scale and operational overhead of tethered live-telemetry deep-sea robots and sensors, we have developed the Fiber Optic Reel System (FOReelS). FOReelS utilizes a customized electric fishing reel outfitted with a proprietary hollow-core braided fiber optic fishing line and mechanical termination assembly (FOFL), which offers an extremely small diameter (750 μm) load-bearing (90 lb/400 N breaking strength) tether to support live high-bandwidth data transmission as well as fiber optic sensing applications. The system incorporates a novel epoxy potted data payload system (DPS) that includes high-definition video, integrated lighting, rechargeable battery power, and gigabit ethernet fiber optic telemetry. In this paper we present the complete FOReelS design and field demonstrations to depths exceeding 780 m using small coastal support vessels of opportunity. FOReelS is likely the smallest form factor live-telemetry deep-sea exploration tool currently in existence, with a broad range of future applications envisioned for oceanographic sensing and communication.

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Wang, Hui Bo. "Experiment and Analysis System without Modulation Locked Fiber Grating System." Applied Mechanics and Materials 513-517 (February 2014): 3886–89. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.3886.

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High stability of semiconductor lasers have been shown useful in many applications areas,[such as optical communication, high-resolution spectroscopy quantum metrology, laser cooling and trapping[. With the rapid development of fiber optic dense wavelength division multiplexing system, we require laser source with high frequency stability in 1.5μm band. In this paper It is clear that temperature, cavity length and injection current have effects on frequency stability of FBG external cavity semiconductor laser by simulation experiments. Besides that, the frequency stabilization system is adjusted. Therefore, the frequency jitter spectra before and after locking are given and the experimental results are analyzed. The results show that after locking laser the typical frequency jitter is significantly improved comparing with frequency fluctuation in the condition of free running.

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Thew, R., A. Acin, H. Zbinden, and N. Gisin. "Experimental realization of entangled qutrits for quantum communication." Quantum Information and Computation 4, no. 2 (March 2004): 93–101. http://dx.doi.org/10.26421/qic4.2-1.

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We have experimentally realized a technique to generate, control and measure entangled qutrits, 3-dimensional quantum systems. This scheme uses spontaneous parametric down converted photons and unbalanced 3-arm fiber optic interferometers in a scheme analogous to the Franson interferometric arrangement for qubits. The results reveal a source capable of generating maximally entangled states with a net state fidelity, F = 0.985 $\pm$ 0.018. Further the control over the system reveals a high, net, 2-photon interference fringe visibility, V = 0.919 $\pm$ 0.026. This has all been done at telecom wavelengths thus facilitating the advancement towards long distance higher dimensional quantum communication.

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Asril, Aprinal Adila. "P PERANCANGAN PEMANCAR DAN PENERIMA MODULASI DIGITAL FSK BERBASIS SERAT OPTIK MENGGUNAKAN METODE SPLISING DAN ADAPTER UNTUK MODUL PRAKTIKUM OPTIK." Jurnal Temapela 2, no. 2 (November 27, 2019): 75–81. http://dx.doi.org/10.25077/temapela.2.2.75-81.2019.

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This research aims to design practicum modules for optical cable transmission systems with fiber optic cable (fiber optic) connection systems. This research was conducted by design and experimental methods. The practicum module that is designed consists of the transmitter and receiver parts using a Digital modulation system. The results of this module design will be tested, measured, and analyzed in the delivery of information using FSK digital modulation and the damping effect of informatio received due to the connection of optical fibers to the transmission system. Splicing is done using the fusion splicer (splising) method and adapters. The two connection methods will be compared to the measurement results, especially the damping value. The results of the study are an Optical practicum module using optical signal transmission media as well as a practicum module (jobsheet). The module that is designed will be one of the Practicum modules to support the eyes of the optical fiber communication system in the State Polytechnic Telecommunications Engineering Study Program. Keyword: Optical cable, fusion splicer, adapter

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Jiang, Yong Xiang, Jing Fang Liu, Xing Hui Zhang, and Yu Ling Zhao. "Communication Module Design of Offshore Drilling Platform Cleaning Robot." Advanced Materials Research 989-994 (July 2014): 3282–85. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3282.

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Communication module design is one of the key technologies in offshore drilling platform cleaning robot, through overall design and analysis of communication systems, the communication module is selected and technology roadmap is analyzed. thus communication module hardware architecture (PC, PLC and multi-sensor ) is designed, multi-sensor (Sonar, infrared, camera, SINS, pressure sensors and fiber optic gyrocompass) underwater monitor is designed and selected, the system software is programmed (PC configuration software, PLC software and communication protocol software); Finally, control structure and running track is designed. The research ensures the operation accurately and improves the cleaning efficiency.

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Sasaki, Hiroyuki, Michiko Nishiyama, Emiko Kondo, Yuko Ito, Norihiko Shinomiya, and Kazuhiro Watanabe. "A Fused System of Sensing and Communication with Hetero-core Spliced Fiber Optic Sensors." IEEJ Transactions on Electronics, Information and Systems 128, no. 10 (2008): 1535–42. http://dx.doi.org/10.1541/ieejeiss.128.1535.

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Shinomiya, Norihiko, Hiroyuki Sasaki, Michiko Nishiyama, Emiko Kondo, Yuko Ito, and Kazuhiro Watanabe. "A fused system of sensing and communication with hetero-core spliced fiber optic sensors." Electrical Engineering in Japan 173, no. 3 (July 22, 2010): 40–48. http://dx.doi.org/10.1002/eej.21021.

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Kolmogorov, Oleg V., Dmitriy V. Prokhorov, Sergey S. Donchenko, and Ekaterina V. Chemesova. "A system of one- and two-way comparisons of time scales using stimulated Raman scattering." Izmeritel`naya Tekhnika, no. 6 (2020): 27–32. http://dx.doi.org/10.32446/0368-1025it.2020-6-27-32.

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Problems requiring high-precision comparisons and synchronization of time scales of remote time and frequency standards are considered. The prospects of using fiber-optic communication lines to solve these problems are considered. Data on maximum operating distances and accuracy characteristics of time scale comparison systems using fiber-optic communication lines are given. It is shown that the range of existing systems is not enough to solve a number of problems. A method for amplifying optical signals in an optical fiber using the effect of stimulated Raman scattering is considered. The application of the Raman amplifier in telecommunication systems is considered. A method is proposed for using the effect of stimulated Raman scattering (SRS) to amplify the optical signals of time scale comparison systems. A scheme is proposed for a system of one- and two-way comparisons of time scales of distant objects, using signal amplification based on the SRS effect realized using two-way counter-pumping. The principle of the system’s operation and the procedure for determining the divergence in the time scales of remote objects are described. The results of estimation of the error and range of systems of one- and two-way comparisons of time scales using Raman amplifier are presented. It is shown that the implementation of Raman-amplification in the equipment of such systems will allow more than three times to increase their range without reducing the accuracy of the systems.

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Shikoski, Jovan, Rumen Arnaudov, and Tinko Eftimov. "Photonic powering of sensors with bidirectional communication along a single fiber." Photonics Letters of Poland 12, no. 1 (March 31, 2020): 7. http://dx.doi.org/10.4302/plp.v12i1.919.

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In this paper we propose and study simultaneous transmission of photonic power and bidirectional communication to and from sensors via 840/1310 nm WDMs. The photovoltaic converter is used both for power conversion and data transfer from the high power laser at 808nm up to 1Mb/s while the 1310nm link can be up to 155 Mb/s.Full Text: PDF References:J.C.V.da Silva, E.L.A.S.de Souza, V.Garcia, J.B.Rosolem, C.Floridia, M.A.B.Sanches, "Design of a Multimode Fiber Optic Cable to Transmit Optical Energy for Long Reach in PoF Systems", Proceedings of the 63rd IWCS Conference, International Wire & Cable Symposium, Shrewsbury, PA, USA, 2014, pp.832-839. [CrossRef]J.B. Rosolem, E.K.Tomiyama, D.C.Dini, F.R.Bassan, R.S.Penze, A.A.Leonardi, C. Floridia, J.P.Fracarolli, R.M.Teixeira, "A fiber optic powered sensor designed for partial discharges monitoring on high voltage bushings". Proc. of SBMO/IEEE MTT‐S International Microwave and Optoelectronics Conference (IMOC); 3-6 Nov. 2015; Porto de Galinhas, Brazil, pp. 1-5. [CrossRef]T.C. Banwell, R.C.Estes, L.A.Reith, P.W.Shumate, E.M.Vogel, "Powering the fiber loop optically - a cost analysis", IEEE J. of Lightwave Techn., Vol. 11, No. 3, pp. 481-494, 1993. [CrossRef]M. Dumke, G. Heiserich, S. Franke, L. Schulz, and L. Overmeyer, "Power Transmission by Optical Fibers for Component Inherent Communication", Systemics, Cybernetics And Informatics, Vol.8, No.1, pp. 55-60, (2010) [DirectLink]C. Gao, J. Wang, L. Yin, J. Yang, J. Jiang, H. Wan, Optically Powered Active Sensing System for Internet Of Things, Proc. SPIE 9270, Optoelectronic Devices and Integration V, 927016 (24 October 2014) [CrossRef]J. Yan, J. Wang, Y. Lu, J. Jiang, H. Wan, Novel Wireless Sensor System Based on Power-over-Fiber Technique, 14th Int. Conf. on Optical Comm. and Networks (ICOCN) 3-5 July 2015, Nanjing, China, 15382393 [CrossRef]Böttger, G.; Dreschmann, M.; Klamouris, C.; Hü bner, M.; Röger, M.; Bett, A. W.; Kueng, T.; Becker, J.; Freu de, W.; Leuthold, J.: An Otically Powered Video Camera Link. IEEE Photonics Technology Letters, Vol. 20, No. 1, pages 39-41, 2008. [CrossRef]M. Matsuura and J. Sato, Bidirectional Radio-Over-Fiber Systems Using Double-Clad Fibers for Optically Powered Remote Antenna Units, IEEE Photonics J., Vol. 7, No. 1, 2015, 7900609 [CrossRef]J. Wang, Q. Li, J. Yan, Y. Ding, Y. Lu, Y. Zhang, H. Wan, Power-Over-Fiber Technique based Sensing System for Internet оf Things, 15th International Conference on Optical Communications and Networks (ICOCN), Hangzhou, China, Sep. 24-27, 2016. [CrossRef]S. Kartalopoulos, Optical Bit Error Rate: An Estimation Methodology (2004) Willey- IEEE Press. [CrossRef]J. Shikoski, R. Arnaudov, and T. Eftimov, A study of the frequency characteristics of a photovoltaic convertor РРС-4Е, Photonics Letters of Poland, Vol. 10(3), (2018), pp. 70-72 [CrossRef]J. B. Rosolem, Optical Fiber and Wireless Communications, Ed. by R. Róka, Ch. 13, Power‐Over‐Fiber Applications for Telecommunications and for Electric Utilities, Intech Open Ltd, London, 2017, pp.255-278. [CrossRef]

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Et. al., Masharipov Otaboy Matyoqubovich,. "On A Methods Of Using Weighted Simulation Improving Reliability To Redundant Fiber Optic Communication Systems." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 5 (April 11, 2021): 1538–50. http://dx.doi.org/10.17762/turcomat.v12i5.2125.

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The article describes the methodology of weighted modelling to increase the reliability of redundant fibre-optic communication systems. In a specific example, a network graph of a many-node fibre-optic communication system is considered. Applying general ideas to determine the reliability characteristics of systems consisting of a large number of different types of elements with different functional relationships between them is quite a difficult task. The materials presented in this article are intended to solve this problem. Along with their relative simplicity, they are highly accurate. The numerical examples in this chapter show that the use of these methods for highly reliable systems can reduce the variance of the estimate by several orders of magnitude compared to the direct modelling method, and thus reduce the time required for calculations on electronic computers by several orders of magnitude. The purpose of the study is to increase the reliability of fibre-optic communication systems. The research methodology is based on models with a limited number of monotonous failure chains, which is available for visual enumeration of the reliability of highly reliable systems. As a result, it is proposed to obtain an approximate formula for assessing the reliability of a highly reliable system, both by modelling and analytically, and calculations using it can be performed using the quadrature method or moment methods. This allows you to build a model according to the block principle, including full-scale blocks or records of the results of their tests, simplifies the interpretation of the results, and creates convenience in software implementation.

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Abolade, Robert Oluwayimika, Oluwaseun Olayinka Tooki, and David Oluwagbemiga Aborisade. "REVIEW ARTICLE ON THE MITIGATION OF FOUR WAVE MIXING IN OPTICAL COMMUNICATION SYSTEM." FUTA JOURNAL OF ENGINEERING AND ENGINEERING TECHNOLOGY 15, no. 1 (April 6, 2021): 53–65. http://dx.doi.org/10.51459/futajeet.2021.15.1.266.

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The main challenge faced in today's telecommunication is the ever increasing demand for bandwidth and data rates. The desire to expand the capacity of fiber optic communication to accommodate this demand accelerated the development of high capacity Dense Wavelength Division Multiplexing (DWDM) transmission equipment. However, nonlinear impairments are the fundamental limiting mechanisms to the amount of data that can be transmitted in DWDM. In DWDM, Four Wave Mixing is the most critical of nonlinear effects in fibre optics communication. This effect limits the DWDMâ€™s channel capacity. There are numerous researches on nonlinear impairments that show the intricacy of FWM phenomena in DWDM system. This article present review of the several measures which have been carried out by researchers to overcome nonlinear effects in DWDM. Such measures include Modulation Formats, Channel Spacing, Channel Shuffling Algorithm and Electro-Optic Phase Modulation. The review provides insight into the methods, parameters and approaches used by other researchers. This will pave way for can thus lead to significant improvement in the design of DWDM system.

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Ikhsan, Roby, Romi Fadli Syahputra, and Saktioto Saktioto. "ANALISIS KOMPENSASI DISPERSI MENGGUNAKAN PENGUAT RAMAN PADA JARINGAN WDM (WAVELENGTH DIVISION MULTIPLEXING) DALAM KOMUNIKASI SERAT OPTIK." Komunikasi Fisika Indonesia 15, no. 2 (October 30, 2018): 88. http://dx.doi.org/10.31258/jkfi.15.2.88-92.

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The discovery of optical fiber cause widespread revolution of communication system. Optical fiber communication has excellency on data transmission speed, security, flexibility, and broadly bandwidth. The applying of WDM network can broaden the bandwidth so that the transmission performance becomes more splendid. Although some factors such as dispersion, attenuation, and scattering can hinder the performance of fiber optic on sending data. Moreover dispersion can wreck data and spread pulse as it travels alongs fiber so that causing interference. There is some methods of dispersion compensation. In this paper, Fiber Raman Amplifier is used on WDM network to strengthen signal which is sent to detector. This research utilize simulation approachment with various bandwidth and length fiber. The results show lowest BER value and highest Q-factor at bandwidth frequency of 30 GHz and fiber length of 20 km.

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Muhammad, Fazal, Farman Ali, Usman Habib, Muhammad Usman, Imran Khan, and Sunghwan Kim. "Time Domain Equalization and Digital Back-Propagation Method-Based Receiver for Fiber Optic Communication Systems." International Journal of Optics 2020 (February 12, 2020): 1–13. http://dx.doi.org/10.1155/2020/3146374.

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Fiber optic communication systems (FOCSs) have attained a lot of attention by revolutionizing the telecommunication industry and offering new possibilities with the technical advancements in state-of-the-art high speed digital electronics. Advanced modulation formats make use of the phase, amplitude, and polarization of the optical signals at the same time to provide high spectral efficiency as compared with 1 bit/s/Hz for the intensity modulation direct detection system (IMDD), but are highly prone to transmission impairments. Thus, the effects that add up to the optical fiber impairments such as optical fiber chromatic dispersion (OFCD), polarization model dispersion (PMD), and phase offset and noise (POaN) need to be addressed at the receiver side. The development of components and algorithms to minimize these effects in next generation FOCSs with 100 Gbps data rate and beyond with long-haul transmission is still a challenging issue. In this paper, digital signal processing- (DSP-) assisted dispersion and nonlinear compensation techniques are presented to compensate for physical layer impairments including OFCD, PMD, and POaN. The simulations are performed considering Dual Polarization- (DP-) QPSK modulation format to achieve two-fold data rate to achieve spectral efficiency of 3.28 bits/s/Hz by making use of the polarization diversity and system performance is investigated in terms of bit error rate (BER), constellation diagrams, and quality factor (Q-factor) for different values of optical signal-to-noise ratio (OSNR), launch power (PL), and fiber length.

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Kurochkin, V. L., A. V. Zverev, Yu V. Kurochkin, I. I. Ryabtsev, and I. G. Neizvestny. "Using single-photon detectors for quantum key distribution in an experimental fiber-optic communication system." Optoelectronics, Instrumentation and Data Processing 45, no. 4 (August 2009): 374–81. http://dx.doi.org/10.3103/s8756699009040153.

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