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Academic literature on the topic 'Optical transmission system'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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Journal articles on the topic "Optical transmission system"

1

IWATSUKI, Katsumi. "Optical Soliton Transmission System." Review of Laser Engineering 24, no. 6 (1996): 641–48. http://dx.doi.org/10.2184/lsj.24.641.

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2

PEDYASH, Volodymyr. "CHANNEL MODELING OF THE OTH OPTICAL TRANSMISSION SYSTEM WITH QUADRATURE AMPLITUDE MODULATION." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (2022): 61–65. http://dx.doi.org/10.31891/2307-5732-2022-313-5-61-65.

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The rapid development of services for providing broadband access to the Internet and multimedia content delivery services required the widespread use of fiber optic transmission systems (FOTS) for the transmission of digital traffic. The transmitter signal passes through an optical line, which includes optical fiber and optical amplifiers. In the optical fiber, linear and nonlinear distortions are introduced into the signal, and optical amplifiers generate additive noise of amplified spontaneous emission. In this paper, we develop a model of the optical channel of OTH system with QAM modulation, which takes into account linear and nonlinear distortions of the optical propagation medium and additive noise of the amplified spontaneous radiation of optical amplifiers. To obtain accurate results, the method of simulation modeling was used. The block diagram of the developed model contains a transmitter, an optical line and a coherent receiver of the optical signal. The expression for the time form of the electric field intensity of the optical signal at the transmitter output is given. Modeling of the optical fiber was performed by the split step Fourier method. The noise of the amplified spontaneous emission of optical amplifiers was formed in the frequency domain by means of the Fourier transform operation. The quality of the optical channel was estimated by calculating the average value of the Q-factor of the optical signal at the receiver output. The dependence of the Q-factor from the number of sections of the optical line and the power level of the optical signal was obtained. It is shown that to maximize the quality characteristics of the optical channel, the optimal value of the signal power should be used. The comparison of the obtained results with the data from specialized software products is carried out. Sufficient accuracy of the proposed model was demonstrated. It is recommended to use the developed channel model in the design of new and modernization of existing fragments of networks based on OTH systems with QAM modulation.

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3

Miao, De Jun, and Yi Zong Dai. "650nm Plastic Optical Fiber Transmission System." Advanced Materials Research 651 (January 2013): 870–73. http://dx.doi.org/10.4028/www.scientific.net/amr.651.870.

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The 650nm plastic optical fiber transmission system includes 650nm optical Ethernet switch, 650nm optical network card, 650nm optical wavelength converter, 650nm photoelectric converter and 650nm optical repeater. Polymer optical fiber is used as transmission medium, the use of photoelectric technology, network technology, embedded chip and software technology, and system integration. The system can replace the existing twisted-pair copper wire LAN system.

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4

Nishioka, Minoru, Kiyokazu Hagiwara, Kiyoshi Uchimura, et al. "HDTV WDM optical fiber transmission system." Journal of the Institute of Television Engineers of Japan 45, no. 3 (1991): 377–83. http://dx.doi.org/10.3169/itej1978.45.377.

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5

Xingyao Gu, Xingyao Gu, Hongwei Chen Hongwei Chen, Minghua Chen Minghua Chen, and Shizhong Xie Shizhong Xie. "160 km all-optical OFDM transmission system with inline chromatic dispersion compensation." Chinese Optics Letters 10, no. 2 (2012): 020601–20604. http://dx.doi.org/10.3788/col201210.020601.

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6

Sha Li, Sha Li, Chongxiu Yu Chongxiu Yu, Zhe Kang Zhe Kang, Gerald Farrell Gerald Farrell, and Qiang Wu Qiang Wu. "160-Gb/s NRZ-DQPSK optical transmission system employing QC-LDPC code." Chinese Optics Letters 12, no. 1 (2014): 010604–10608. http://dx.doi.org/10.3788/col201412.010604.

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7

PEDYASH, Volodymyr. "MATHEMATICAL MODELING OF FIBER-OPTIC TRANSMISSION SYSTEM WITH INTENSITY MODULATION." Herald of Khmelnytskyi National University. Technical sciences 317, no. 1 (2023): 162–66. http://dx.doi.org/10.31891/2307-5732-2023-317-1-162-166.

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Fibre optic transmission systems are widespread in the transport network. Optical Transport Hierarchy (OTH) transmission systems are the basis of the transport network. The principle of wavelength multiplexing of channels is used to increase the technical and economic performance. Technically a simpler type of intensity modulation is used to transmit OTU1 and OTU2 OTH frames. Erbium-doped fibre-based optical amplifiers also generate amplified spontaneous emission noise, which degrades the performance of the transmission system. The qualitative characteristics of the optical channel of OTH transmission system with intensity modulation are investigated in this paper. In the simulation process, it is possible to neglect the nonlinear signal distortion in the optical fiber at the nominal signal power of the transponder transmitter. Therefore, in the studied transmission system model, an optical oscillation consisting of two components (signal and noise) arrives at the receiver input. In this case, an electrical signal consisting of three summands (signal-signal, signal-noise and noise-noise) will be generated at the output of the photodiode. A simplified formula for calculating the Q-factor of the optical signal, which affects the error probability in the optical channel, is proposed in most of the specialized literature. Numerical Q-factor values were calculated for OTU1 and OTU2 frames. They were compared with the reference results which were obtained by simulation in Optiwave Optisystem software. The analysis of the obtained data has proved that the simplified formula for the calculation of the Q-factor has a relative error of the order of 39-59%. A more accurate result can be obtained by using an expression that takes into account both components of the noise at the photodiode output.

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8

Inoue, K., H. Toba, and K. Nosu. "Tunable optical multi/demultiplexer for optical FDM transmission system." Electronics Letters 21, no. 9 (1985): 387. http://dx.doi.org/10.1049/el:19850276.

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9

XU, ANSHI, DEMING WU, QIANGSHENG XIANG, KAN ZHANG, CHU WANG, and LINZHEN XIE. "ANALYSIS AND EXPERIMENT OF MULTICHANNEL WDM + EDFA OPTICAL FIBER TRANSMISSION SYSTEMS." International Journal of High Speed Electronics and Systems 07, no. 03 (1996): 357–65. http://dx.doi.org/10.1142/s0129156496000177.

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A 151 km "WDM + EDFA" optical fiber transmission system with 8 channels and 2 EDFAs has been built for the first time in China. Some formulas are given to estimate the effect of optical signal power and ASE noise on BER, the power penalty caused by the Stimulated Raman Scattering (SRS) and the crosstalk due to the grating demultiplexer in optical amplified WDM systems with EDFAs. The calculation results are well agreed with experimental data. In addition, an 8-channel, optically amplified WDM system with regenerated transmission distance of 1208 km, an 8-channel, 240 km optically amplified WDM system and a 12-channel, 240 km optically amplified WDM system have been developed successively.

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10

NERSISYAN, S. R., N. V. TABIRYAN, D. M. STEEVES, and B. R. KIMBALL. "OPTICAL AXIS GRATINGS IN LIQUID CRYSTALS AND THEIR USE FOR POLARIZATION INSENSITIVE OPTICAL SWITCHING." Journal of Nonlinear Optical Physics & Materials 18, no. 01 (2009): 1–47. http://dx.doi.org/10.1142/s0218863509004555.

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The ability of optical axis gratings (OAGs) to fully transfer the energy of an unpolarized incident light beam into the ±1st diffraction orders is explored below for development of a polarization-independent optical system with nonlinear transmission. Diffractive properties of OAGs based on azo dye doped liquid crystals (azo LCs) are efficiently controlled with low power radiation. Switching from diffractive to transmissive states of the OAG takes place within 50 ms at 60 W/cm2 power density level, while the diffractive state is restored within ~ 1 s in the absence of radiation. High contrast optical switching is demonstrated with violet as well as green laser beams. A photoswitchable OAG is paired with a light-insensitive OAG in diffraction compensation configuration to obtain an optical system switchable from high to low transmission state. The thinness of OAGs required for high contrast switching ensures high overall transmission of the system. Given also the spectrally and angularly broadband nature of OAG diffraction and the capability of azo LC material systems to respond both to cw as well as short laser pulses makes the optical system under discussion very promising for optical switching applications. Presentation of these results is preceded by an "opinionated" review of prior developments and demystifying of the fabrication technique of high efficiency large area OAGs.

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Dissertations / Theses on the topic "Optical transmission system"

1

Moura, Luis Miguel da Silva Carvalho de. "Circuit techniques for very high speed digital optical transmission : timing extraction sub-system." Thesis, Bangor University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262231.

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Liu, Tao. "Advanced Coded Modulation for High Speed Optical Transmission." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/613291.

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In the recent years, the exponential Internet traffic growth projections place enormous transmission rate demand on the underlying information infrastructure at every level, from the long haul submarine transmission to optical metro networks. In recent years, optical transmission at 100 Gb/s Ethernet date rate has been standardized by ITU-T and IEEE forums and 400Gb/s and 1Tb/s rates per DWDM channel systems has been under intensive investigation which are expected to be standardized within next couple of years.To facilitate the implementation of 400GbE and 1TbE technologies, the new advanced modulation scheme combined with advanced forward error correction code should be proposed. Instead of using traditional QAM, we prefer to use some other modulation techniques, which are more suitable for current coherent optical transmission systems and can also deal with the channel impairments. In this dissertation, we target at improving the channel capacity by designing the new modulation formats. For the first part of the dissertation, we first describe the optimal signal constellation design algorithm (OSCD), which is designed by placing constellation points onto a two dimensional space. Then, we expand the OSCD onto multidimensional space and design its corresponding mapping rule. At last, we also develop the OSCD algorithm for different channel scenario in order to make the constellation more tolerant to different channel impairments. We propose the LLR-OSCD for linear phase noise dominated channel and NL-OSCD for nonlinear phase noise dominated channel including both self-phase modulation (SPM) and cross-phase modulation (XPM) cases. For the second part of the dissertation, we target at probability shaping of the constellation sets (non-uniform signaling). In the conventional data transmission schemes, the probability of each point in a given constellation is transmitted equally likely and the number of constellation sets is set to 2!. If the points with low energy are transmitted with larger probability then the others with large energy, the non- uniform scheme can achieve higher energy efficiency. Meanwhile, this scheme may be more suitable for optical communication because the transmitted points with large probabilities, which have small energy, suffer less nonlinearity. Both the Monte Carlo simulations and experiment demonstration of both OSCD and non-uniform signaling schemes indicate that our proposed signal constellation significantly outperforms QAM, IPQ, and sphere-packing based signal constellations.

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3

Al-Dabbagh, Rasha Khalid Mohammed. "A photonic generation and transmission system for millimetre-wave futuristic communications." Thesis, Brunel University, 2018. http://bura.brunel.ac.uk/handle/2438/16249.

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In this thesis, a fully millimetre-wave (mm-wave) generation and transmission system is proposed for futuristic communications. Significant challenges have been dealt with regarding the proposed system, including designing the mm-wave generation and transmission technique, and its application in cellular networks. These challenges are presented through five main contributions and validated via Optiwave Design Software and MATLAB simulation tools. Firstly, three novel photonic generation methods are proposed and designed based on the characteristics of Brillouin fibre laser and the Stimulated Brillouin Scattering (SBS) effects with phase modulation. The mm-wave carriers are successfully generated with a tuning capability from 5 to 90 GHz. Also, these carriers are with good Signal to Noise Ratio (SNR) up to 51 dB, and low noise signal power of about -40 dBm. The impact of these methods is obtaining stable mm-waves appropriate for Radio over Fibre (RoF) transmission systems in 5G optical networks. Secondly, a full-duplex RoF system with the generation of a 64 GHz mm-wave is proposed. Successful transmission of the mm-wave over a fibre link is achieved for up to 100 km of fibre with a data rate of 5 Gbits/s. The main impact of this system is cost reduction and performance improvement by simplifying mm-wave generation and transmission over fibre. Also, it ensures a useful communication link for small cell networks. Thirdly, a hybrid Fibre/Free-space optical (FSO) system for the generation and transmission of 64 GHz mm-wave is proposed. This optical system provides a low latency communication link and overcomes mm-wave high path losses. A successful mm-wave transmission is achieved over a 10 km fibre length, and 2 km FSO link length with a good Bit Error Rate (BER) of about 1.5×10-13 and a data rate of 10 Gbits/s. This system increases the network coverage area by transmitting the mm-wave over the FSO link to the areas with natural obstacles the laying of fibre cables impossible. Also, it can be used as an effective solution under emergency disaster conditions. Fourthly, a comprehensive study of the wireless propagation performance for different mm-wave bands (28, 60, and 73 GHz) as cellular networks is investigated and compared with the 2.4 GHz Ultra-High Frequency band (UHF). A map-based scenario is proposed for the deployment of Base Stations (BSs) within the Brunel University London Campus map to consider real blockage effects. This investigation involved specifying which mm-wave spectrum can enhance the futuristic cellular networks, by evaluating the coverage and rate trends. Comparative results show that the 73 GHz bands can achieve the higher rate with good coverage and the lowest interference effects than the other mm-wave bands. Finally, a simplified path loss model is proposed to estimate precisely the 28 GHz mm-wave performance, which is considered a key component in 5G networks in outdoor applications. The proposed path loss model captures the diffraction and specular reflection impacts on mm-wave wireless propagation.

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4

CIGLIUTTI, ROBERTO. "Multilevel Nyquist-WDM Ultra-Long-Haul Coherent Optical Transmission Systems." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2506370.

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The continuous expansion of multimedia terminals, like smart-phones, besides the introduction of new multimedia services, like the high-definition streaming television, determines a constant increase in the demand of high-speed connectivity. This scenario requires a permanent update of the data capacity in local access networks. Nevertheless, a proper capacity upgrades plan, with new optical links deployment, has required for back-bone optical networks in order to avoid possible networks congestions. Such effect has theoretically forecast as probable in actual networks within next few tenths years, particularly in US if some network segments will reach their saturation. Nowadays, the most promising technology for future optical communication networks has proven to be coherent detection. Rather than intensity modulation direct detection systems, such solution enables to implement new multilevel transmission systems, allowing a more efficient use of the optical transmission bandwidth. These novel coherent optical communication systems have been made possible thanks to the availability of high-speed (gigabit-per-second) analog and digital opto-/electronic devices. Such new devices have allowed the introduction of real-time digital signal processing (DSP) in coherent receivers, so overcoming the practical limitations that were experienced in coherent optical system experiments in the early 1990s. In this thesis, four main topics have been investigated to assess the feasibility and behaviour of spectrally efficient multichannel coherent optical communication systems for the highest data channel capacity in ultra-long-haul links. More in details, Nyquist filtered multilevel optical modulation formats (QPSK, 8QAM and 16QAM) have been investigated as candidates for the efficient transmission of information (toward the Shannon limit). Wavelength division multiplexed (WDM) systems assembled with these modulation formats have proven to support high spectral efficiency for data transmission over distances ranging from 3000~km to 10000~km. Besides the report of state-of-the-art transmission experiments, some practical and theoretical limitations have been discussed to motivate choices for laboratory experimental solutions as well as devices characteristics, DSP parameters, etc. The introduction of a novel mathematical model, accounting for non-linear interference (NLI) accumulations in optical lines optimized for systems based on coherent detection, has required an experimental validation through ad-hoc Nyquist-WDM transmission experiments. Reliability of the NLI model in performance predictions, enables to derive analytical expressions of transmission quantities as: the Figure of Merit of optical fibers, the non-linear channel capacity, etc. Furthermore, a simulative study to investigate the potentiality of a digital back-propagation (DBP) technique has been performed. The application of a digital non-linear compensation technique to data of a Nyquist-WDM transmission experiment has been carried out. Such analysis confirmed a loss in efficiency of DBP based on single channel processing to improve transmission distance in ultra-dense WDM systems as Nyquist-WDM. Finally, a simulative study about the polarization dependent loss (PDL) impact on system performances has been reported. Results from this analysis have justified the introduction in the DSP of the coherent receiver algorithms for the continuous channel parameters monitor. This DSP upgrade allowed to improve and speed-up laboratory measurements. The thesis is organized as follows: in the first chapter, it is reported a brief review of motivations, advantages and drawbacks in reintroducing coherent detection based systems in optical networks. Thereafter, novel DSP-based coherent optical systems are briefly introduced with some references about DSP algorithms reported in Appendix A. Theoretical foundations about the application of Nyquist theory to achieve ultra-dense WDM systems are reported in the second chapter. Chapters three to six have been dedicated to separately report each of the four investigated topics mentioned above. The final chapter contains a conclusive analysis, and it has followed by a reference bibliography and a complete list of the papers published within the three-year PhD period (2010-2012).

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5

Carbó, Meseguer Alexis. "Semiconductor optical amplifiers for ultra-wideband optical systems." Thesis, Evry, Institut national des télécommunications, 2018. http://www.theses.fr/2018TELE0010/document.

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Au cours des dernières décennies, le monde a subi une révolution majeure qui a profondément affecté comment on utilise les réseaux de communication. De nouveaux services et applications ont été apparus, tels que les réseaux sociaux, les jeux en ligne ou le streaming en direct, qui exigent une augmentation constante de la capacité des systèmes optiques. La motivation de ce travail est donc d'étudier la mise en œuvre d'un nouvel amplificateur SOA à très large bande avec une bande passante de plus de 100 nm afin d’étendre la capacité du système. L'utilisation de l'amplification SOA change complètement le paradigme dans la conception d'un système optique puisque toutes les dégradations ajoutées par la SOA doivent être considérées. Ainsi, la recherche d'un modèle analytique ou numérique capable de caractériser la nature non linéaire de ce dispositif est d'abord étudiée. Ensuite, on montre comment un SOA bien conçu peut non seulement amplifier un signal à large bande, mais également surmonter certains des principaux inconvénients du SOA devant EDFA. Finalement, on évalue la capacité de ce nouveau UWB SOA pour les applications d'interconnexion de centres de données avec deux expériences en transmettant jusqu'à 115 Tbps de données dans une liaison à bande passante continue de 100 nm sur 100 km de fibre et en testant la stabilité du système avec cartes de ligne en temps réelle entre deux points de présence (POP) de Facebook déployés dans la région parisienne<br>Over the last few decades the world has undergone a major revolution that has deeply affected the way we use communication networks. New services and applications have appeared demanding a constant increase of the channel capacity. In this period, optical systems have been upgraded at pair with advanced signal processing techniques which have permitted the increase of the spectral efficiency approaching the system capacity to the fundamental limit. It is because is becoming extremely challenging to keep growing the system capacity by this means. In this work, an orthogonal direction is studied to further increase the fibre capacity: extending the optical bandwidth. With this purpose, the use of semiconductor optical amplifiers (SOA) is investigated to be implemented in future ultra-wideband (UWB) systems. The use of SOA amplification changes completely the paradigm in the design of an optical system since all the impairments added by the SOA must be considered. In this work, we assess the reservoir model, a simple yet powerful model, to analyze numerically the nonlinear regime of the SOA for WDM systems. We also show for the first that the linewidth enhancement factor of an SOA can be estimated with a coherent receiver. Finally, it is also studied how the correlation between channels degrades significantly the performance of the SOA and the inclusion of a decorrelation fibre is investigated. The conception of a UWB system is then studied. We characterize a novel ultra-wideband SOA developed by the French project CALIPSO which presents high gain in a 100-nm optical bandwidth with high output saturation power and 6-8 dB of noise figure. We analyze its nonlinear regime for WDM systems and we show for QPSK and 16 QAM modulation formats that the input saturation power can be overtaken by serveral dBs without important nonlinear penalty. On the other hand, a novel technique is studied to compensate fibre nonlinearities in UWB systems: the multicarrier multiplexing, which tries to exploit the concept of symbol rate optimization. Finally, we assess the capabilities of this novel UWB SOA for data-centre interconnection applications with two experiments transmitting up to 113 Tbps data troughput in a 100-nm continuous bandwidth link over 100 km of fibre and then testings is stability with real-time line cards between two points of presence (POP)of Facebook deployed in the Paris area

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6

Larson, Bruce C. (Bruce Carl). "An optical telemetry system for wireless transmission of biomedical signals across the skin." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/16716.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Vita.<br>Includes bibliographical references (p. 236-239).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>A technology base for optically-coupled systems was developed that permits in-vivo transmission of biomedical signals across the skin. By complete implantation of sensors and instrumentation electronics, problems with percutaneous connectors were eliminated. Optical power and signal transmission was accomplished with smaller and lighter implant structures than previously achieved with radio frequency (RF) coupling techniques. This is particularly valuable in the field of neuroprosthetics, because it may be possible to implant an optical telemeter directly on the surface of the brain to make mechanically stable connections to microelectrode arrays for neuroelectric recordings. Miniature optical power panels (2.5 mm x 2.5 mm) were developed from arrays of photodiodes. Infrared light of 880 nm wavelength was effective for delivering power across the skin. Panels composed of silicon photodiodes were 14% efficient at converting this light to electrical power, and GaAlAs panels were 41% efficient. Tissue heating experiments demonstrated the safety of optical power transmission. An LED was identified that was both electrically efficient (16%) and of appropriate wavelength (660 nm) for transmitting optical signals from the implant. Pulse period encoding was used for transmission of signals because it was robust and required less power than schemes with higher LED duty cycles. Specialized photodetector circuits were developed to receive pulse encoded data, and decoder circuits were built to reconstruct the transmitted signals. Two prototype single-channel neural waveform telemeters (approx. 10 Hz to 7 kHz bandwidth) were constructed and implanted in the visual cortex of rabbits. Both implants successfully transmitted neuroelectric signals. The first implant survived for four weeks before failing due to a flaw in the encapsulation, and the improved second prototype continues to function properly 28 months after implantation. Integrated circuits (ICs) were designed to record and transmit eight channels of neural waveforms. The first IC telemeter functioned properly, although the sensitivity was not as great as needed for the recording of neural waveforms. It required less than 50 mW of electrical power to operate. Efforts to improve this design introduced flaws in the next set of IC designs, so these problems were addressed, and a final set of designs was submitted for fabrication at the conclusion of this research project.<br>by Bruce C. Larson.<br>Ph.D.

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7

Kaiser, Wilfried [Verfasser]. "Impact of advanced modulation formats on the system performance of high-speed optical transmission systems / Wilfried Kaiser." Aachen : Shaker, 2003. http://d-nb.info/1181600766/34.

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8

Carbó, Meseguer Alexis. "Semiconductor optical amplifiers for ultra-wideband optical systems." Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2018. http://www.theses.fr/2018TELE0010.

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Au cours des dernières décennies, le monde a subi une révolution majeure qui a profondément affecté comment on utilise les réseaux de communication. De nouveaux services et applications ont été apparus, tels que les réseaux sociaux, les jeux en ligne ou le streaming en direct, qui exigent une augmentation constante de la capacité des systèmes optiques. La motivation de ce travail est donc d'étudier la mise en œuvre d'un nouvel amplificateur SOA à très large bande avec une bande passante de plus de 100 nm afin d’étendre la capacité du système. L'utilisation de l'amplification SOA change complètement le paradigme dans la conception d'un système optique puisque toutes les dégradations ajoutées par la SOA doivent être considérées. Ainsi, la recherche d'un modèle analytique ou numérique capable de caractériser la nature non linéaire de ce dispositif est d'abord étudiée. Ensuite, on montre comment un SOA bien conçu peut non seulement amplifier un signal à large bande, mais également surmonter certains des principaux inconvénients du SOA devant EDFA. Finalement, on évalue la capacité de ce nouveau UWB SOA pour les applications d'interconnexion de centres de données avec deux expériences en transmettant jusqu'à 115 Tbps de données dans une liaison à bande passante continue de 100 nm sur 100 km de fibre et en testant la stabilité du système avec cartes de ligne en temps réelle entre deux points de présence (POP) de Facebook déployés dans la région parisienne<br>Over the last few decades the world has undergone a major revolution that has deeply affected the way we use communication networks. New services and applications have appeared demanding a constant increase of the channel capacity. In this period, optical systems have been upgraded at pair with advanced signal processing techniques which have permitted the increase of the spectral efficiency approaching the system capacity to the fundamental limit. It is because is becoming extremely challenging to keep growing the system capacity by this means. In this work, an orthogonal direction is studied to further increase the fibre capacity: extending the optical bandwidth. With this purpose, the use of semiconductor optical amplifiers (SOA) is investigated to be implemented in future ultra-wideband (UWB) systems. The use of SOA amplification changes completely the paradigm in the design of an optical system since all the impairments added by the SOA must be considered. In this work, we assess the reservoir model, a simple yet powerful model, to analyze numerically the nonlinear regime of the SOA for WDM systems. We also show for the first that the linewidth enhancement factor of an SOA can be estimated with a coherent receiver. Finally, it is also studied how the correlation between channels degrades significantly the performance of the SOA and the inclusion of a decorrelation fibre is investigated. The conception of a UWB system is then studied. We characterize a novel ultra-wideband SOA developed by the French project CALIPSO which presents high gain in a 100-nm optical bandwidth with high output saturation power and 6-8 dB of noise figure. We analyze its nonlinear regime for WDM systems and we show for QPSK and 16 QAM modulation formats that the input saturation power can be overtaken by serveral dBs without important nonlinear penalty. On the other hand, a novel technique is studied to compensate fibre nonlinearities in UWB systems: the multicarrier multiplexing, which tries to exploit the concept of symbol rate optimization. Finally, we assess the capabilities of this novel UWB SOA for data-centre interconnection applications with two experiments transmitting up to 113 Tbps data troughput in a 100-nm continuous bandwidth link over 100 km of fibre and then testings is stability with real-time line cards between two points of presence (POP)of Facebook deployed in the Paris area

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9

Xu, Tianhua. "Digital Dispersion Equalization and Carrier Phase Estimation in 112-Gbit/s Coherent Optical Fiber Transmission System." Licentiate thesis, KTH, Optik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34034.

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Coherent detection employing multilevel modulation format has become one of the most promising technologies for next generation high speed transmission system due to the high power and spectral efficiencies. With the powerful digital signal processing (DSP), coherent optical receivers allow the significant equalization of chromatic dispersion (CD), polarization mode dispersion (PMD), phase noise (PN) and nonlinear effects in the electrical domain. Recently, the realizations of these DSP algorithms for mitigating the channel distortions in the transmission system are the most attractive investigations. The CD equalization can be performed by the digital filters developed in the time and the frequency domain, which can suppress the fiber dispersion effectively. The PMD compensation is usually performed in the time domain with the adaptive least mean square (LMS) and constant modulus algorithms (CMA) equalization. Feed-forward and feed-back carrier phase estimation algorithms are employed to mitigate the phase noise from the transmitter and local oscillator lasers. The fiber nonlinearities are compensated by using the digital backward propagation methods based on solving the nolinear Schrodinger (NLS) equation and the Manakov equation. In this dissertation, we present a comparative analysis of three digital filters for chromatic dispersion compensation, an analytical evaluation of carrier phase estimation with digital equalization enhanced phase noise and a brief discussion for PMD adaptive equalization. To implement these investigations, a 112-Gbit/s non-return-to-zero polarization division multiplexed quadrature phase shift keying (NRZ-PDM-QPSK) coherent transmission system is realized in the VPI simulation platform. With the coherent transmission system, these CD equalizers have been compared by evaluating their applicability for different fiber lengths, their usability for dispersion perturbations and their computational complexity. Meanwhile, the bit-error-rate (BER) floor in carrier phase estimation using a one-tap normalized LMS filter is evaluated analytically, and the numerical results are compared to a differential QPSK detection system.<br>QC 20110629

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10

Reyhanioglu, Erinc. "Selection Of Light Source And Implementation Of Data Acquisition System Of An Optical Experimental Setup." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/1044361/index.pdf.

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The construction of an optical experimental setup is the objective, to measure transmission coefficient of optical components used in plasma investigations. Thus, proper light source either with continuous or line radiation spectrum should be used. In addition, the detectors&rsquo<br>output signal is recorded on a PC based data recorder after being digitized by an analog to digital converter card.

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Books on the topic "Optical transmission system"

1

Hull, J. A. NSEP fiber optics system study, background report: Nuclear effects on fiber optic transmission systems. U.S. Dept. of Commerce, 1987.

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Yŏnʼguwŏn, Hanʼguk Chŏnja Tʻongsin, та Korea (South) Chŏngbo Tʻongsinbu, ред. Tʻerabitʻŭkŭp WDM kwang chŏnsong sisŭtʻem kisul e kwanhan yŏnʼgu =: A study of terabit WDM optical transmission system technology. ETRI, 2004.

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Geckeler, Siegfried. Optical fiber transmission systems. Artech House, 1987.

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1937-, Baack Clemens, ed. Optical wideband transmission systems. CRC Press, 1986.

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Optical transmission systems engineering. Artech House, 2004.

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Geckeler, Siegfried. Optical fiber transmission systems. Artech House, 1987.

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Maclean, D. J. H. Optical line systems: Transmission aspects. John Wiley & Sons, 1996.

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Jacobsen, Gunnar. Noise in digital optical transmission systems. Artech House, 1994.

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Microwave and optical transmission. J. Wiley, 1992.

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Microwave and optical transmission. Wiley, 1992.

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Book chapters on the topic "Optical transmission system"

1

Seimetz, Matthias. "System Simulation Aspects." In High-Order Modulation for Optical Fiber Transmission. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-93771-5_5.

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Hasegawa, Akira. "Amplification of a Soliton — Application to the Optical Soliton Transmission System." In Optical Solitons in Fibers. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-662-09113-5_6.

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Yang, Hongzhen, Yanbo Wang, Hao Chi, and Daochun Yuan. "Transmission Delay in Optical Fiber Communication System of Power Transmission and Transformation." In 2021 International Conference on Applications and Techniques in Cyber Intelligence. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79197-1_7.

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Maruta, A., T. Inoue, Y. Nonaka, and Y. Yoshika. "Bi-Soliton Propagating in Dispersion-Managed System and Its Application to High Speed and Long Haul Optical Transmission." In Optical Solitons. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-36141-3_12.

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Hoshida, Takeshi, and Jens C. Rasmussen. "QPSK-Based Transmission System: Trade-Offs Between Linear and Nonlinear Impairments." In High Spectral Density Optical Communication Technologies. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10419-0_10.

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Ermolaev, Artur A., Maria A. Shevchenko, Elena I. Andreeva, and Dmitry P. Andreev. "Features of a Fiber-Optics Transmission System Using Dispersion-Managed Optical Solitons." In Springer Proceedings in Physics. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-81119-8_57.

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Yu, Jianjun, and Nan Chi. "Quasi-linear Coherent Optical Transmission System and Digital Signal Processing." In Digital Signal Processing In High-Speed Optical Fiber Communication Principle and Application. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3098-2_3.

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Bengtsson, Thomas, Todd Salamon, Tin Kam Ho, and Christopher A. White. "Model-Based Anomaly Detection for a Transparent Optical Transmission System." In Computer Communications and Networks. Springer London, 2010. http://dx.doi.org/10.1007/978-1-84882-765-3_12.

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Xiang, Mei-Qiong, Jia-Liang Zhu, Zheng-Xi He, et al. "Research on Switch Signal Transmission System Based on Optical Fiber." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1181-1_16.

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Kim, Hae Geun. "High Speed Optical Coherent Transmission System Using Narrowband FM Subcarrier Multiplexing." In Future Generation Information Technology. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-27142-7_12.

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Conference papers on the topic "Optical transmission system"

1

Zisu, Tudor, and Sorin Miclos. "Optical fiber video transmission system." In Symposium on Integrated Optics, edited by Gail J. Brown and Manijeh Razeghi. SPIE, 2001. http://dx.doi.org/10.1117/12.429432.

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Maruta, Akihiro. "Eigenvalue modulated optical transmission system." In 2015 Opto-Electronics and Communications Conference (OECC). IEEE, 2015. http://dx.doi.org/10.1109/oecc.2015.7340112.

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"Polarization division multiplexed optical transmission system." In 2010 IEEE Photonics Society Summer Topical Meeting Series. IEEE, 2010. http://dx.doi.org/10.1109/phosst.2010.5553740.

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Arya, Subhash C., Shalini S. Arya, and Vishnu Priye. "EDFA amplified MSK optical transmission system." In International Conference on Fiber Optics and Photonics, edited by Sunil K. Khijwania, Banshi D. Gupta, Bishnu P. Pal, and Anurag Sharma. SPIE, 2010. http://dx.doi.org/10.1117/12.899880.

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Zhang, Yulan, Jinliang Feng, Yongliang Li, and Jiandong Yang. "Optical design of laser transmission system." In Photonics China '98, edited by Junheng Li and James A. Harrington. SPIE, 1998. http://dx.doi.org/10.1117/12.317870.

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Miclos, Sorin, Tudor Zisu, and Bogdan Robea. "Optical fiber multiplexed image transmission system." In ROMOPTO '97: Fifth Conference on Optics, edited by Valentin I. Vlad and Dan C. Dumitras. SPIE, 1998. http://dx.doi.org/10.1117/12.312667.

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Larner, D. S., M. R. A. Paesler, and B. M. E. Hill. "A 565-Mbit/sec monomode transmission system." In Optical Fiber Communication Conference. OSA, 1985. http://dx.doi.org/10.1364/ofc.1985.wb2.

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EMURA, KATSUMI, and MINORU SHIKADA. "Long distance coherent optical fiber transmission system." In Optical Fiber Communication Conference. OSA, 1989. http://dx.doi.org/10.1364/ofc.1989.tui1.

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Lu, C., Z. H. Li, Y. F. Yang, et al. "100Gb/s transmission system implementation and optimization." In Asia Pacific Optical Communications, edited by Ken-ichi Kitayama, Pierpaolo C. Ghiggino, Kim Roberts, and Yikai Su. SPIE, 2008. http://dx.doi.org/10.1117/12.806454.

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Unami, Y., N. Mitsueda, S. Kimura, Y. Nakamura, and T. Yamadda. "ID Tester for 1.31/1.55µm WDM Transmission System." In Optical Fiber Sensors. OSA, 1996. http://dx.doi.org/10.1364/ofs.1996.ex14.

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Reports on the topic "Optical transmission system"

1

Nguyen, Eric, Mark H. Mar, and Ronald J. Reyzer. High-Altitude Electromagnetic Pulse Simulation Test on Northern Telecom Inc. FD-565 Optical Fiber Transmission System. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada330605.

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2

Ali, M. A., S. A. Ahmed, and L. Roytman. Novel Multiplexing Techniques for High-Speed Optical Transmission Systems Using Optical Amplifiers. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada325673.

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3

Menyuk, Curtis R. Limitations on High Data Rate Optical Fiber Transmission Systems Due to Transmission Impairment. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/900756.

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Kong, Zhihao, and Na Lu. Determining Optimal Traffic Opening Time Through Concrete Strength Monitoring: Wireless Sensing. Purdue University, 2023. http://dx.doi.org/10.5703/1288284317613.

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Construction and concrete production are time-sensitive and fast-paced; as such, it is crucial to monitor the in-place strength development of concrete structures in real-time. Existing concrete strength testing methods, such as the traditional hydraulic compression method specified by ASTM C 39 and the maturity method specified by ASTM C 1074, are labor-intensive, time consuming, and difficult to implement in the field. INDOT’s previous research (SPR-4210) on the electromechanical impedance (EMI) technique has established its feasibility for monitoring in-situ concrete strength to determine the optimal traffic opening time. However, limitations of the data acquisition and communication systems have significantly hindered the technology’s adoption for practical applications. Furthermore, the packaging of piezoelectric sensor needs to be improved to enable robust performance and better signal quality. In this project, a wireless concrete sensor with a data transmission system was developed. It was comprised of an innovated EMI sensor and miniaturized datalogger with both wireless transmission and USB module. A cloud-based platform for data storage and computation was established, which provides the real time data visualization access to general users and data access to machine learning and data mining developers. Furthermore, field implementations were performed to prove the functionality of the innovated EMI sensor and wireless sensing system for real-time and in-place concrete strength monitoring. This project will benefit the DOTs in areas like construction, operation, and maintenance scheduling and asset management by delivering applicable concrete strength monitoring solutions.

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Taylor. L51724 Fiber Optic Pressure Sensor Development. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0010368.

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Fiber optic sensors have been under development in industrial and government laboratories around the world for over a decade The commercial market for fiber sensors for measuring parameters such as temperature, displacement, and liquid level is now estimated to exceed $50 M/year Aside from the commercial interest, the U S. Department of Defense has vigorously pursued the development of fiber gyroscopes and hydrophones In spite of the high level of research and devleopment activity, however, fiber sensors were not successfully applied in the relatively harsh environment of engine combustion chambers prior to 1991. The goal of this development is to demonstrate the utilization of a new fiber optic sensor technology in engines used for natural gas transmission. Presently, there is no way to continuously measure pressure in these engines over extended periods of operation. Reliable fiber optic sensor networks supplying data to computerized control systems for on-line engine balancing could lead to major reductions in the emission of NO, and other harmful combustion products. Fuel economies in the millions of dollars per year for companies in the natural gas transmission industry could also be realized.

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Duncan. L52005 Reliable Diagnosis of SCC During Field Inspection. Pipeline Research Council International, Inc. (PRCI), 2003. http://dx.doi.org/10.55274/r0011252.

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Direct assessment (DA) is one method pipeline companies use to assess the extent and severity of stress corrosion cracking and other defects on their pipeline system. Successful integrity management of a pipeline is dependent, in part, on proper interpretation of the defects encountered in the DA program. The objective of this project was to prepare a document containing a compilation of types of crack-like magnetic-particle testing (MT) or visual indications found on underground transmission pipelines for the purpose of proper interpretation of their type and cause. Pipe samples containing various types of defects were inspected by means of black and MT, optically photographed, and then metallographically sectioned and photographed. The MT photographs and metallographic photomicrographs were compiled in an Access Database.

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7

Hall and Brown. PR-343-14607-R01 Miniaturized Gas Chromatography and Gas Quality Sensor. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010558.

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In natural gas transmission and distribution, many metering stations utilize gas chromatography to ensure the gas complies with the pipeline�s gas quality tariff provisions and to determine the chemical energy content of the gas for billing purposes. It is also used as a check on the operation of gas ultrasonic flowmeters through a calculation of the speed of sound in the gas. Because of limitations on existing gas chromatographs (GC�s), including high installed cost, analysis time, carrier gas consumption and others, there is a desire to consider alternate technologies for natural gas analysis. PRCI has sponsored a study of technologies that utilize the variation in absorption/scattering of optical wavelengths by different molecules. The purpose of this study is to extend that study to the use of additional technologies, such as MEMS (Micro-Electro-Mechanical Systems). This is not a new approach, but recent advancements offer a greater possibility of achievement of the desired goals than in the past. This study reviewed and evaluated work in process with MEMS technology to provide a smaller, less ex-pensive, lower-power and faster GC that can be utilized in a Class 1 Division 2 area. Developments at both commercial firms and in university MEMS research programs have been included. Since there have been several programs to evaluate �energy meters� that attempt to measure gas quality by calculating the BTU content of a gas sample, this study focused on micro-GC�s that can make a much more precise measurement of gas quality.

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