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Journal articles on the topic 'Wavelength division multiplexing. Optical communications'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Matsuura, Takanori, Atsushi Uchida, and Shigeru Yoshimori. "Chaotic wavelength division multiplexing for optical communication." Optics Letters 29, no. 23 (2004): 2731. http://dx.doi.org/10.1364/ol.29.002731.

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2

Sargent, Robert B., and Nada A. O'Brien. "Dielectric Materials for Thin-Film-Based Optical Communications Filters." MRS Bulletin 28, no. 5 (2003): 372–76. http://dx.doi.org/10.1557/mrs2003.103.

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AbstractExplosive growth in the fiber-optic telecommunications infrastructure during the past decade has driven noteworthy advances in thin-film-based optical interference filter technology. In particular, the widespread deployment of wavelength-division multiplexing (WDM), a means of increasing the communication capacity of an optical fiber by utilizing more than one wavelength of light, has motivated significant improvements in bandpass filter performance. A common requirement is for filters that combine or separate wavelengths spaced 100 GHz (0.8 nm) apart. The foundation for these recent breakthroughs has been laid by the development of optical coating technology over the past century. This article reviews the materials and processes used in the production of thin-film-based optical communications filters.

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3

Janagal, Mamta, Gurpreet Kaur, Varinder Mandley, and Tanvi Sood. "Investigation the Effect of Channel Spacing for Long Distance Communication." CGC International Journal of Contemporary Technology and Research 2, no. 1 (2019): 45–47. http://dx.doi.org/10.46860/cgcijctr.2019.12.20.45.

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In this paper, the impact of different channel spacing on proposed system setup is investigated for long distance communication. This wavelength division multiplexing (WDM), dense wavelength division multiplexing (DWDM) and ultradense wavelength division multiplexing (UDWDM) is evaluated by considering the signal quality factor, bit error rate, optical gain, and received power for different signal input power and for distance. It is observed that at -5 dBm of signal input power the system covers 130 km with acceptable BER (10-8) and Q-factor (14dB).

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4

Dutta, Achyut K. "Advances in Optical Components and Subsystems for Wavelength-Division Multiplexing Communications." Optical Engineering 43, no. 5 (2004): 1016. http://dx.doi.org/10.1117/1.1739478.

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5

Sano, Koichi, and Ryuichi Watanabe. "A design of optical wavelength-division-multiplexing transmission systems." Electronics and Communications in Japan (Part I: Communications) 69, no. 6 (1986): 42–53. http://dx.doi.org/10.1002/ecja.4410690606.

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6

G. "Optical Code-Division Multiple-Access and Wavelength Division Multiplexing: Hybrid Scheme Review." Journal of Computer Science 8, no. 10 (2012): 1718–29. http://dx.doi.org/10.3844/jcssp.2012.1718.1729.

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7

Liu, Jun, Shi Chen, Hongya Wang, et al. "Amplifying Orbital Angular Momentum Modes in Ring-Core Erbium-Doped Fiber." Research 2020 (February 20, 2020): 1–12. http://dx.doi.org/10.34133/2020/7623751.

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Lots of research efforts have been devoted to increase the transmission capacity in optical communications using orbital angular momentum (OAM) multiplexing. To enable long-haul OAM mode transmission, an in-line OAM fiber amplifier is desired. A ring-core fiber (RCF) is considered to be a preferable design for stable OAM mode propagation in the fiber. Here, we demonstrate an OAM fiber amplifier based on a fabricated ring-core erbium-doped fiber (RC-EDF). We characterize the performance of the RC-EDF-assisted OAM fiber amplifier and demonstrate its use in OAM multiplexing communications with OAM modes carrying quadrature phase-shift keying (QPSK) and quadrature amplitude modulation (QAM) signals. The amplification of two OAM modes over four wavelengths is demonstrated in a data-carrying OAM-division multiplexing and wavelength-division multiplexing system. The obtained results show favorable performance of the RC-EDF-assisted OAM fiber amplifier. These demonstrations may open up new perspectives for long-haul transmission in capacity scaling fiber-optic communications employing OAM modes.

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8

Tang, Xiong-Yan, and Mee-Koy Chin. "Optimal channel spacing of wavelength division multiplexing optical soliton communication systems." Optics Communications 119, no. 1-2 (1995): 41–45. http://dx.doi.org/10.1016/0030-4018(95)00319-4.

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9

Bahleda, Miroslav, and Karol Blunar. "The Gain of Performance of Optical WDM Networks." Journal of Computer Systems, Networks, and Communications 2008 (2008): 1–10. http://dx.doi.org/10.1155/2008/289690.

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We study the blocking probability and performance of single-fiber and multifiber optical networks with wavelength division multiplexing (WDM). We extend the well-known analytical blocking probability model by Barry and Humblet to the general model, which is proposed for both single-fiber and multifiber network paths with any kind of wavelength conversion (no, limited, or full wavelength conversion) and for uniform and nonuniform link loads. We investigate the effect of the link load, wavelength conversion degree, and the number of wavelengths, fibers, and hops on blocking probability. We also extend the definition of the gain of wavelength conversion by Barry and Humblet to the gain of performance, which is fully general. Thanks to this definition and implementation of our model, we compare different WDM node architectures and present interesting results.

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10

Pornsuwancharoen, N., M. Tasakorn, and S. Jurajaturasiraratn. "DWDM of Optical Micro Ring Resonator Double Add/Drop Multiplexing for THz Optical Communication." Advanced Materials Research 770 (September 2013): 390–93. http://dx.doi.org/10.4028/www.scientific.net/amr.770.390.

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A system that can be used to generate the new optical communication bandwidths using a Gaussian pulse propagating within a nonlinear microring resonator double add/drop multiplexing system is discussed. By using the wide range of the Gaussian input pulses, for instance, when the input pulses of the common lasers with center wavelength of 1,500 nm are used. Results obtained shows that more available wavelength bands from the optical communication band can be generated, which can be used to form new dense wavelength division multiplexing bands, whereas the use of the very high capacity more than 200 channels for personal wavelength and network applications is plausible.

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11

Rashed, Ahmed Zaki. "Demonstration of Multi Pump Wide Gain Raman Amplifiers for Maximization of Repeaters Distance in Optical Communication Systems." International Journal of Informatics and Communication Technology (IJ-ICT) 4, no. 1 (2015): 38. http://dx.doi.org/10.11591/ijict.v4i1.pp38-44.

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<p>Fiber Raman amplifiers in ultra wide wavelength division multiplexing (UW-WDM) systems have recently received much more attention because of their greatly extended bandwidth and distributed amplification with the installed fiber as gain medium. It has been shown that the bandwidth of the amplifier can be further increased and gain spectrum can be tailored by using pumping with multiple wavelengths. Wide gain of the amplifier is considered where two sets of pumps N<sub>R</sub> {5,10} are investigated. The gain coefficient is cast under polynomial forms. The pumping wavelength l<sub>R</sub> is over the range 1.40 £ l<sub>R</sub>, mm £ 1.44 and the channel wavelength l<sub>s</sub> is over the range 1.45 £ l<sub>s</sub>, mm £ 1.65. Two multiplexing techniques are processed in long-haul transmission cables where number of channels is up to 10000 in ultra-wide wavelength division multiplexing (UW-WDM) with number of links up to 480. The problem is investigated over wide ranges of affecting sets of parameters.</p>

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12

Gadkar, Arush, Tim Entel, Jeremy M. Plante, and Vinod M. Vokkarane. "Slotted Advance Reservation for Multicast-Incapable Optical Wavelength Division Multiplexing Networks." Journal of Optical Communications and Networking 6, no. 3 (2014): 340. http://dx.doi.org/10.1364/jocn.6.000340.

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13

Tran, Duc-Tan, and Ninh Trung Bui. "Improvements on the performance of subcarrier multiplexing/wavelength division multiplexing based radio over fiber system." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1439. http://dx.doi.org/10.11591/ijece.v11i2.pp1439-1449.

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Radio over fiber (RoF) techniques are good candidates to create the backbone of the next generation of wireless networks. Many parameters affect RoF communications such as amplified spontaneous emission noise (ASE), four-wave mixing nonlinearity (FWM), the modulation, channel spacing, switching voltage, and phase shifter. In this paper, we propose an improved model of RoF communication systems using subcarrier multiplexing/wavelength division multiplexing (SCM/WDM) technique with unequal channel spacing and 1-km Erbium-doped fiber amplifier (EDFA). Simulation results confirmed that we could obtain the lowest bit error rate and noises when the EDFA is placed at 1 km from the transmitter by using optical single-sideband (OSSB) modulation at frequencies 193.1 THz, 193.2 THz, 193.35 THz, and 193.6 THz.

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14

Liu, Yu-Liang, and Jou-Ming Chang. "Realizing Exchanged Crossed Cube Communication Patterns on Linear Array WDM Optical Networks." International Journal of Foundations of Computer Science 29, no. 06 (2018): 1003–21. http://dx.doi.org/10.1142/s0129054118500181.

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The exchanged crossed cube, denoted by [Formula: see text], is a novel interconnection network with fewer edges and smaller diameter compared to other variations of the corresponding hypercube. The linear array, denoted by [Formula: see text], is one of the most popular topologies in optical networks. This paper addresses the routing and wavelength assignment for realizing [Formula: see text] communication pattern on wavelength division multiplexing (WDM) optical network [Formula: see text], where [Formula: see text]. We prove that the congestion for [Formula: see text] on [Formula: see text] is equal to [Formula: see text], which is the lower bound of the minimum number of required wavelengths. In addition, an embedding scheme and an optimal wavelength assignment algorithm that achieve this bound are also proposed.

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15

Bandele, Jeremiah O., Malcolm Woolfson, and Andrew J. Phillips. "Saturation in wavelength-division multiplexing free-space optical communication systems." Frontiers of Optoelectronics 12, no. 2 (2018): 197–207. http://dx.doi.org/10.1007/s12200-018-0838-5.

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16

Hu, Hao, and Leif K. Oxenløwe. "Chip-based optical frequency combs for high-capacity optical communications." Nanophotonics 10, no. 5 (2021): 1367–85. http://dx.doi.org/10.1515/nanoph-2020-0561.

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AbstractCurrent fibre optic communication systems owe their high-capacity abilities to the wavelength-division multiplexing (WDM) technique, which combines data channels running on different wavelengths, and most often requires many individual lasers. Optical frequency combs, with equally spaced coherent comb lines derived from a single source, have recently emerged as a potential substitute for parallel lasers in WDM systems. Benefits include the stable spacing and broadband phase coherence of the comb lines, enabling improved spectral efficiency of transmission systems, as well as potential energy savings in the WDM transmitters. In this paper, we discuss the requirements to a frequency comb for use in a high-capacity optical communication system in terms of optical linewidth, per comb line power and optical carrier-to-noise ratio, and look at the scaling of a comb source for ultra-high capacity systems. Then, we review the latest advances of various chip-based optical frequency comb generation schemes and their applications in optical communications, including mode-locked laser combs, spectral broadening of frequency combs, microresonator-based Kerr frequency combs and electro-optic frequency combs.

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17

Hamza, Haitham S., and Jitender S. Deogun. "Wavelength-division-multiplexing optical Benes-type networks with simultaneous space-wavelength switching." Journal of Optical Networking 5, no. 11 (2006): 807. http://dx.doi.org/10.1364/jon.5.000807.

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18

Bilici, T., Ş İşçi, A. Kurt, and A. Serpengüzel. "GaInNAs microspheres for wavelength division multiplexing." IEE Proceedings - Optoelectronics 150, no. 1 (2003): 89. http://dx.doi.org/10.1049/ip-opt:20030046.

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19

Choi, Bo-Hun. "The effect comparison using saturation tone signals for optical wavelength division multiplexing communications." Journal of the Korea Institute of Information and Communication Engineering 18, no. 8 (2014): 2037–42. http://dx.doi.org/10.6109/jkiice.2014.18.8.2037.

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20

Aisawa, Shigeki, Kazuhiro Noguchi, Takao Matsumoto, Hideki Tsunetsugu, and Masahiro Yuda. "Neural processing-type optical wavelength division multiplexing demultiplexer using a grating." Electronics and Communications in Japan (Part I: Communications) 79, no. 5 (1996): 1–14. http://dx.doi.org/10.1002/ecja.4410790501.

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21

Hua, Nan, Xiaoping Zheng, Hanyi Zhang, and Bingkun Zhou. "A wavelength-buffering scheme for dynamic traffic in optical wavelength-division multiplexing networks." Photonic Network Communications 16, no. 1 (2008): 43–51. http://dx.doi.org/10.1007/s11107-008-0116-3.

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22

Qu, Zhen, and Ivan Djordjevic. "Orbital Angular Momentum Multiplexed Free-Space Optical Communication Systems Based on Coded Modulation." Applied Sciences 8, no. 11 (2018): 2179. http://dx.doi.org/10.3390/app8112179.

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In this paper, we experimentally investigate the turbulence mitigation methods in free-space optical communication systems based on orbital angular momentum (OAM) multiplexing. To study the outdoor atmospheric turbulence environment, we use an indoor turbulence emulator. Adaptive optics, channel coding, Huffman coding combined with low-density parity-check (LDPC) coding, and spatial offset are used for turbulence mitigation; while OAM multiplexing and wavelength-division multiplexing (WDM) are applied to boost channel capacity.

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23

Salleh, M. S., A. S. M. Supa’at, S. M. Idrus, S. Yaakob та Z. M. Yusof. "Wavelength Tuning Free Transceiver Module in OLT Downstream Multicasting4λ × 10 Gb/s TWDM-PON System". Journal of Computer Networks and Communications 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/483249.

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We propose a new architecture of dynamic time-wavelength division multiplexing-passive optical network (TWDM-PON) system that employs integrated all-optical packet routing (AOPR) module using4λ×10 Gbps downstream signal to support 20 km fiber transmission. This module has been designed to support high speed L2 aggregation and routing in the physical layer PON system by using multicasting cross-gain modulation (XGM) to route packet from any PON port to multiple PON links. Meanwhile, the fixed wavelength optical line terminal (OLT) transmitter with wavelength tuning free features has been designed to integrate with the semiconductor optical amplifier (SOA) and passive arrayed waveguide grating (AWG). By implementing hybrid multicasting and multiplexing, the system has been able to support a PON system with full flexibility function for managing highly efficient dynamic bandwidth allocation to support the4λ×10 Gb/s TWDM-PON system used to connect 4 different PON links using fixed wavelength OLT transceivers with maximum 38 dB link loss.

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24

Ahmadivand, Arash, Burak Gerislioglu, and Zeinab Ramezani. "Generation of magnetoelectric photocurrents using toroidal resonances: a new class of infrared plasmonic photodetectors." Nanoscale 11, no. 27 (2019): 13108–16. http://dx.doi.org/10.1039/c9nr04312h.

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The detection of photons by plasmonic subwavelength devices underpins spectroscopy, low-power wavelength division multiplexing for short-distance optical communication, imaging, and time-gated distance measurements.

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25

Zhang Jian-Zhong, Wang An-Bang, and Wang Yun-Cai. "Wavelength division multiplexing of chaotic optical communication and OC-48 fiber communication." Acta Physica Sinica 58, no. 6 (2009): 3793. http://dx.doi.org/10.7498/aps.58.3793.

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26

Upadhyay, Kamal Kishore, Saumya Srivastava, N. K. Shukla, and Sushank Chaudhary. "High-Speed 120 Gbps AMI-WDM-PDM Free Space Optical Transmission System." Journal of Optical Communications 40, no. 4 (2019): 429–33. http://dx.doi.org/10.1515/joc-2017-0086.

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Abstract Free space optical (FSO) communication systems are gaining high popularity from the last decade due to its various advantages such as no license spectrum, low-cost implementation etc. In this work, 160 Gbps data is transmitted over 8 km FSO link by adopting alternate mark inversion (AMI), wavelength division multiplexing (WDM) and polarization division multiplexing (PDM) schemes. The results are reported in terms of Q factor, bit error rate, signal to noise ratio, total received power and eye diagrams.

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27

Sulaiman, Malik, Norhana Arsad, Harry Ramza, et al. "Wavelength Division Multiplexing Network over Polymer Optical Fiber Using Fabricated Couplers for Informatics Communications." Procedia Technology 11 (2013): 1211–17. http://dx.doi.org/10.1016/j.protcy.2013.12.315.

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28

Zhao, Qingchun, and Hongxi Yin. "Performance analysis of dense wavelength division multiplexing secure communications with multiple chaotic optical channels." Optics Communications 285, no. 5 (2012): 693–98. http://dx.doi.org/10.1016/j.optcom.2011.10.085.

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29

Manousiadis, Pavlos P., Hyunchae Chun, Sujan Rajbhandari, et al. "Optical Antennas for Wavelength Division Multiplexing in Visible Light Communications beyond the Étendue Limit." Advanced Optical Materials 8, no. 4 (2019): 1901139. http://dx.doi.org/10.1002/adom.201901139.

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30

A. "EFFICIENT MULTIPATH ROUTING AND WAVELENGTH ALLOCATION USING TRAFFIC GROOMING IN OPTICAL WAVELENGTH DIVISION MULTIPLEXING MESH NETWORKS." Journal of Computer Science 8, no. 11 (2012): 1839–48. http://dx.doi.org/10.3844/jcssp.2012.1839.1848.

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31

Danaryani, Sri. "Analisis Power Budget pada Jaringan Komunikasi Jarak Jauh Menggunakan SMF 28." JOURNAL OF APPLIED INFORMATICS AND COMPUTING 2, no. 2 (2019): 67–71. http://dx.doi.org/10.30871/jaic.v2i2.475.

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The fourth generation of optical fibers is wavelength division multiplexing (DWDM), where several wavelengths propagate in a single optical fiber. This technique strongly supports broadband communication that is currently being developed. An optical amplifier (EDFA) is required for transmitted information to be received at the appropriate distance limits. The problem, where EDFA should be located and how to overcome the chromatic dispersion of signals occurs, especially on remote communications using SMF 28. The power budget analysis starts from the calculation of the distance between the amplifier and the strengthening of EDFA using the solution wave equation, where the large dispersion of chromatic fiber and the desired range becomes the determinant of the optical amplifier. Case study for 200 km of communication distance need three amplifiers with a space of about 80km. When a 1 GHz bandwidth is converted to 10 GHz, OSNR on each amplifier will decrease by 10 dB.

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32

Payal, Suresh Kumar, and Deepak Sharma. "Performance Analysis of NRZ and RZ Modulation Schemes in Optical Fiber Link Using EDFA." International Journal of Advanced Research in Computer Science and Software Engineering 7, no. 8 (2017): 161. http://dx.doi.org/10.23956/ijarcsse.v7i8.45.

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Dense Wavelength Division Multiplexing (DWDM) is the current area of interest to exploit the bandwidth offered by optical fiber to enhance the data rate requirements. In the present paper analysis of DWDM system using Erbium Doped Fiber Amplifier (EDFA) is carried out in C-band. The 32-channel Wavelength Division Multiplexing (WDM) system, with a high-performanceflowrate of 10 Gbps, has been evaluated. The performance of Return to Zero (RZ) and Non-Return to Zero (NRZ) modulation formats in an optical communication system are investigated by modeling an optical fiber link using software OPTISYS V14. According to the modulated outputs, a comprehensive comparison in terms of Q factor is developed to establish the advantages and disadvantages of the code formats NRZ and RZ in short and long haul optical fiber communication system. Optimum results of Bit Error Rate (BER) and Q-factor are obtained for 60, 80 and 100km of fiber length. Pumping is discussed at 980nm and 1480nm.

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33

CARAGIANNIS, IOANNIS, CHRISTOS KAKLAMANIS, and PINO PERSIANO. "SYMMETRIC COMMUNICATION IN ALL-OPTICAL TREE NETWORKS." Parallel Processing Letters 10, no. 04 (2000): 305–13. http://dx.doi.org/10.1142/s0129626400000299.

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We address the problem of allocating optical bandwidth to a set of communication requests in a tree-shaped all-optical network that utilizes Wavelength Division Multiplexing (WDM) technology. WDM technology establishes communication between pairs of nodes of the network by establishing tranceiver–receiver paths and assigning wavelengths to each path so that no two paths going through the same link use the same wavelength. Optical bandwidth is the number of distinct wavelengths. The important engineering problem to be solved is to establish communication between pairs of nodes so that the total number of wavelengths used is minimized. In this paper, we focus on a special case of the problem considering patterns of requests that are symmetric, i.e. for any transmitter–receiver pair of nodes (v1, v2) there also exists its symmetric (v2, v1). Our motivation lies in the fact that many services that are expected to be supported by high performance optical networks in the future, require bidirectional reservation of bandwidth. We prove that the problem of optimizing the number of wavelengths used is NP-hard even when the underlying network is a binary tree. We also present two interesting lower bounds.

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34

Sharma, Bindu, Veena Kumari, and Abhishek Sharma. "Role of Wavelength Division Multiplexing Scheme in Free Space Optical Communication Systems." International Journal of Computer Applications 178, no. 28 (2019): 10–14. http://dx.doi.org/10.5120/ijca2019919103.

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35

Yonemura, Masatoshi, Akari Kawasaki, Satoru Kato, Manabu Kagami, and Yukitoshi Inui. "Polymer waveguide module for visible wavelength division multiplexing plastic optical fiber communication." Optics Letters 30, no. 17 (2005): 2206. http://dx.doi.org/10.1364/ol.30.002206.

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36

MYARA, M., P. SIGNORET, J. P. TOURRENC, B. ORSAL, and J. JACQUET. "1/f NOISE IN DBR TUNABLE LASERS." Fluctuation and Noise Letters 06, no. 01 (2006): L35—L43. http://dx.doi.org/10.1142/s0219477506003124.

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Tunable Lasers are key-components for Wavelength Division Multiplexing optical communication applications at 1.55μm. In this paper, we compare a rate equation model with measurements performed in order to study the Bragg section contribution in the 1/f-optical-beam noise power spectral density.

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37

MYNBAEV, DJAFAR K., and VITALY SUKHARENKO. "PLASMONIC-BASED DEVICES FOR OPTICAL COMMUNICATIONS." International Journal of High Speed Electronics and Systems 21, no. 01 (2012): 1250006. http://dx.doi.org/10.1142/s0129156412500061.

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To meet the demand of delivering ever-increasing Internet traffic, optical network must response by increasing its transmission capacity. Since transmission capacity of an individual fiber is still well exceed the capacity of transmitters (TXs) and receivers (RXs), wavelength-division multiplexing (WDM), in which many TXs and RXs at the transmitting ends of a fiber are used to send and receive many signals, becomes the necessary technology for increasing the transmission capacity of each link of an optical network. This trend, however, demands for increasing density not only the TXs and RXs, but all other components at the sending and receiving ends of communications links. As the number of wavelengths in WDM configuration getting greater, the number of all these components that must be placed on one board has to increase too; hence, the density of packaging comes to micro- and even nano-scale. The TXs and RXs are produced in arrays on a chip quite similar to production of VLSI electronic circuits. At that scale, traditional optical operations used today in an optical-communications technology, such as launching light into optical fiber from TXs and directing light from optical fiber into RXs, multiplexing and demultiplexing individual channels (wavelengths), and electro-optical (E/O) and opto-electrical (O/E) conversions become problems primarily because of the diffraction limit. The problems associated with the diffraction limit are particularly acute for optical interconnects. One of the possible solutions to all these—and some other—problems could be the use of plasmonics. In the last years, the optical-communications industry shows a great interest in developing this topic, as the growing number of publications and practical results can attest. This paper consists of two parts. The first part reviews the current trends in application of plasmonics in optical communications and the second part discusses the theoretical foundation of the proposed WDM demultiplexer and offers the scheme of possible implementation of the device.

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38

Burton, Andrew, Petr Chvojka, Paul Anthony Haigh, Zabih Ghassemlooy, and Stanislav Zvanovec. "Optical Filter-Less WDM for Visible Light Communications Using Defocused MIMO." Electronics 10, no. 9 (2021): 1065. http://dx.doi.org/10.3390/electronics10091065.

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This paper experimentally investigates, for the first time, a new wavelength-division multiplexing-based visible light communications link based on a defocused non-imaging multiple-input multiple-output (MIMO), which removes the need for tuned optical bandpass filters paired with each receiver. The proposed system is based on using the natural diversity of the individual light emitting diodes (LEDs) within a single light source to generate an H-matrix, which is independent of spatial diversity. We show that, by transmitting K-independent sets of non-return to zero on-and-off keying signals on separate wavelengths, the received superposed symbols can be demultiplexed. The non-imaging MIMO diversity is achieved by considering the power-current characteristics of the light emitting diode, the responsivity of the photodetector array, and the defocused beam spot. The system is empirically verified for K = 3 using red, green, and blue LEDs with Q-factors of 7.66, 7.69, and 4.75 dB, respectively.

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39

Feng, Da, Weiqiang Sun, and Weisheng Hu. "Optical Grooming Capable Wavelength Division Multiplexing node architecture for beyond 100 Gbps transport." Optical Switching and Networking 34 (November 2019): 67–78. http://dx.doi.org/10.1016/j.osn.2019.07.001.

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40

Nakagawa, Ken’ichi, and Atsushi Onae. "Developments of Optical Frequency Standards for Wavelength-division-multiplexing (WDM) Optical Fiber Communication Systems." IEEJ Transactions on Fundamentals and Materials 124, no. 1 (2004): 52–55. http://dx.doi.org/10.1541/ieejfms.124.52.

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41

Róka, Rastislav. "An Effective Evaluation of Wavelength Scheduling for Various WDM-PON Network Designs with Traffic Protection Provision." Symmetry 13, no. 8 (2021): 1540. http://dx.doi.org/10.3390/sym13081540.

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Recently, metropolitan and access communication networks have markedly developed by utilizing a variety of technologies. Their bearer communication infrastructures will be mostly exploiting the optical transmission medium where wavelength division multiplexing techniques will play an important role. This contribution discusses the symmetric sharing of common optical network resources in wavelength and time domains. Wavelength-Division Multiplexed Passive Optical Networks (WDM-PON) attract considerable attention regarding the next generation of optical metropolitan and access networks. The main purpose of this contribution is presented by the analysis of possible scheduling of wavelengths for our novel hybrid network topologies considered for WDM-PON networks. This contribution briefly deploys adequate Dynamic Wavelength Allocation (DWA) algorithms for selected WDM-PON network designs with the provision of traffic protection when only passive optical components in remote nodes are utilized. The main part of this study is focused on the use of wavelength scheduling methods for selected WDM-PON network designs. For evaluation of offline and online wavelength scheduling for novel hybrid network topologies, a simulation model realized in the Matlab programming environment allows to analyze interactions between various metropolitan and access parts in the Optical Distribution Network (ODN) related to advanced WDM-PON network designs. Finally, wavelength scheduling methods are compared from a viewpoint of utilization in advanced WDM-PON networks designs.

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Choudhary, Kuldeep, and Santosh Kumar. "Design of an Optical OR Gate using Mach-Zehnder Interferometers." Journal of Optical Communications 39, no. 2 (2018): 161–65. http://dx.doi.org/10.1515/joc-2016-0131.

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AbstractThe optical switching phenomenon enhances the speed of optical communication systems. It is widely used in the wavelength division multiplexing (WDM). In this work, an optical OR gate is proposed using the Mach-Zehnder interferometer (MZI) structure. The detailed derivation of mathematical expression have been shown. The analysis is carried out by simulating the proposed device with MATLAB and Beam propagation method.

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Sisodiya, Divya, and Gurjit Kaur. "Significance and Limitations on Free Space Optical Communication Using Wavelength Division Multiplexing (WDM)." International Journal of Research in Engineering, Science and Management 3, no. 12 (2020): 52–55. http://dx.doi.org/10.47607/ijresm.2020.405.

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Dealing with wireless communication has been one of the most significant milestones in the history of technology. Free Space Optics is one of the leading wireless communication technologies related to secure data transfer in modern times as well as providing communication flexibility by making it more complex compared to Optical threads. In this paper, the significance of the FSO and its various variables in the various models are presented. Also, free space communication is done using Wavelength division multiplexing (WDM). The behavior of system has been observed for different attenuations in the propagation medium. Simulation is done with the help of Opti system software.

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Jia, Hao, Shanglin Yang, Ting Zhou, et al. "WDM-compatible multimode optical switching system-on-chip." Nanophotonics 8, no. 5 (2019): 889–98. http://dx.doi.org/10.1515/nanoph-2019-0005.

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AbstractThe development of optical interconnect techniques greatly expands the communication bandwidth and decreases the power consumption at the same time. It provides a prospective solution for both intra-chip and inter-chip links. Herein reported is an integrated wavelength-division multiplexing (WDM)-compatible multimode optical switching system-on-chip (SoC) for large-capacity optical switching among processors. The interfaces for the input and output of the processor signals are electrical, and the on-chip data transmission and switching process are optical. It includes silicon-based microring optical modulator arrays, mode multiplexers/de-multiplexers, optical switches, microring wavelength de-multiplexers and germanium-silicon high-speed photodetectors. By introducing external multi-wavelength laser sources, the SoC achieved the function of on-chip WDM and mode-division multiplexing (MDM) hybrid-signal data transmission and switching on a standard silicon photonics platform. As a proof of concept, signals with a 25 Gbps data rate are implemented on each microring modulator of the fabricated SoC. We illustrated 25 × 3 × 2 Gbps on-chip data throughput with two-by-two multimode switching functionality through implementing three wavelength-channels and two mode-channel hybrid-multiplexed signals for each multimode transmission waveguide. The architecture of the SoC is flexible to scale, both for the number of supported processors and the data throughput. The demonstration paves the way to a large-capacity multimode optical switching SoC.

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Chen, Xiao Lei, Qing Chun Zhao, Hong Xi Yin, and Xin Yu Dou. "Wavelength Division Multiplexing between 2.5-Gbits/s Chaotic Optical Secure Channel and 10-Gbits/s Nonchaotic Fiber-Optic Channel." Advanced Materials Research 571 (September 2012): 457–61. http://dx.doi.org/10.4028/www.scientific.net/amr.571.457.

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In this paper, we numerically investigate the wavelength division multiplexing (WDM) transmission between chaotic optical secure channel and nonchaotic fiber-optic channel. When the channel spacing is 0.8 nm, a 2.5-Gbits/s message masked by the chaotic optical secure channel and a 10-Gbits/s message carried by the nonchaotic fiber-optic channel can be achieved simultaneously. The results show that the Q-factor of the recovered message can be increased significantly when the launched power is reduced appropriately. The deterioration on the quality of communications caused by fiber dispersion can be compensated obviously when the symmetrical dispersion compensation scheme is adopted. In addition, the message is masked by chaos shift keying in the chaotic optical secure channel. The multiplexing distance between the chaotic optical secure channel and the nonchaotic fiber-optic channel is up to 150 km.

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Xu, Ying Chao, Qing Na Wang, and Wen Zhang Zhu. "Design and Simulation of Arrayed Waveguide Grating for Miniature Raman Spectrometer." Applied Mechanics and Materials 644-650 (September 2014): 3588–92. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.3588.

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Arrayed waveguide grating (AWG) is a very popular dense wavelength division multiplexing (DWDM) device, which is produced in the field of optical communication technology. Instead of traditional grating and lens spectral system, AWG is used as the spectral chip in miniature Raman spectrometer. It’s quite important for miniature Raman spectrometer in miniaturization and low cost. This paper analyzed the basic principles of AWG device, and introduces the insertion loss, crosstalk and phase error performance parameters, also focuses on the specific technical requirements about wavelength, optical channel number, phase error, wavelength resolution and bandwidth, which are applied in miniature Raman spectrometer. Some new researches and a series of related simulation have been made, finally won the 1 * 40 channels AWG spectral chips, with wavelength range of 880-920 nm, insertion loss of center wavelengths is better than-0.9 dB.

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Shahidinejad, Ali, Iraj Sadegh Amiri, and Toni Anwar. "Enhancement of Indoor Wavelength Division Multiplexing-Based Optical Wireless Communication Using Microring Resonator." Reviews in Theoretical Science 2, no. 3 (2014): 201–10. http://dx.doi.org/10.1166/rits.2014.1021.

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Thakur, Aditi, Shaina Nagpal, and Amit Gupta. "Kerr effect based spectrum sliced wavelength division multiplexing for free space optical communication." Optik 157 (March 2018): 31–37. http://dx.doi.org/10.1016/j.ijleo.2017.08.062.

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Sayed, Ahmed F., Fathy M. Mustafa, Ashraf A. M. Khalaf, and Moustafa H. Aly. "Apodized chirped fiber Bragg grating for postdispersion compensation in wavelength division multiplexing optical networks." International Journal of Communication Systems 33, no. 14 (2020): e4551. http://dx.doi.org/10.1002/dac.4551.

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Sano, Koichi, and Ryuichi Watanabe. "A minimum channel spacing of optical wavelength-division-multiplexing transsion for subscriber loop systems." Electronics and Communications in Japan (Part I: Communications) 69, no. 9 (1986): 55–64. http://dx.doi.org/10.1002/ecja.4410690907.

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