The Experts below are selected from a list of 43902 Experts worldwide ranked by ideXlab platform
Peter A Andrekson - One of the best experts on this subject based on the ideXlab platform.
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noise performance of Optical fiber Transmission links that use non degenerate cascaded phase sensitive amplifiers
Optics Express, 2010Co-Authors: Zhi Tong, Magnus Karlsson, C J Mckinstrie, Carl Lundstrom, Peter A AndreksonAbstract:Based on semi-classical theory, the noise performance of a multi-span fiber Optical Transmission System employing a cascaded phase-insensitive amplifier (PIA) and phase-sensitive amplifiers (PSAs) is investigated. Compared with the pure-PIA and pure-PSA based in-line amplification schemes, the copier + PSA scheme is found to improve the System NF by up to 6 and 3 dB, respectively, in an optimized long-haul fiber link. In addition, this cascaded configuration will significantly relax the requirement for accurate phase- and wavelength-locking which is rigorously needed in the pure-PSA configuration. This scheme is also modulation-format independent. As a proof of concept, the NF of a fiber parametric amplifier based copier + PSA cascade with inter-stage attenuation representing the fiber link is measured, which shows a 1.8-dB total NF improvement over the conventional EDFA cascade.
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noise performance of Optical fiber Transmission links that use non degenerate cascaded phase sensitive amplifiers
Optics Express, 2010Co-Authors: Zhi Tong, Magnus Karlsson, C J Mckinstrie, Carl Lundstrom, Peter A AndreksonAbstract:Based on semi-classical theory, the noise performance of a multi-span fiber Optical Transmission System employing a cascaded phase-insensitive amplifier (PIA) and phase-sensitive amplifiers (PSAs) is investigated. Compared with the pure-PIA and pure-PSA based in-line amplification schemes, the copier + PSA scheme is found to improve the System NF by up to 6 and 3 dB, respectively, in an optimized long-haul fiber link. In addition, this cascaded configuration will significantly relax the requirement for accurate phase- and wavelength-locking which is rigorously needed in the pure-PSA configuration. This scheme is also modulation-format independent. As a proof of concept, the NF of a fiber parametric amplifier based copier + PSA cascade with inter-stage attenuation representing the fiber link is measured, which shows a 1.8-dB total NF improvement over the conventional EDFA cascade.
Magnus Karlsson - One of the best experts on this subject based on the ideXlab platform.
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asic implementation of time domain digital back propagation for coherent receivers
IEEE Photonics Technology Letters, 2018Co-Authors: Christoffer Fougstedt, Lars Svensson, Mikael Mazur, Magnus Karlsson, Per LarssonedeforsAbstract:Digital back propagation (DBP) is often proposed and implemented offline for the mitigation of nonlinear impairments in long-haul fiber communications. However, complexity in terms of chip area and power consumption in a realistic application-specific integrated circuit implementation is yet to be determined. Here, we implement time-domain DBP (TD-DBP) in a 28-nm fully-depleted silicon-on-insulator process technology, considering digital implementation aspects such as limited-resolution arithmetic and finite-length filters. We choose as example a coherent Optical Transmission System, viz. a single-channel, single-polarization, and 20-GBd 16-QAM System, for which the DBP is known to perform well. For the considered System, we find that the TD-DBP can enable a reach increase from 3400 to 5300 km, at a power dissipation of $10^{-2}$ .
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noise performance of Optical fiber Transmission links that use non degenerate cascaded phase sensitive amplifiers
Optics Express, 2010Co-Authors: Zhi Tong, Magnus Karlsson, C J Mckinstrie, Carl Lundstrom, Peter A AndreksonAbstract:Based on semi-classical theory, the noise performance of a multi-span fiber Optical Transmission System employing a cascaded phase-insensitive amplifier (PIA) and phase-sensitive amplifiers (PSAs) is investigated. Compared with the pure-PIA and pure-PSA based in-line amplification schemes, the copier + PSA scheme is found to improve the System NF by up to 6 and 3 dB, respectively, in an optimized long-haul fiber link. In addition, this cascaded configuration will significantly relax the requirement for accurate phase- and wavelength-locking which is rigorously needed in the pure-PSA configuration. This scheme is also modulation-format independent. As a proof of concept, the NF of a fiber parametric amplifier based copier + PSA cascade with inter-stage attenuation representing the fiber link is measured, which shows a 1.8-dB total NF improvement over the conventional EDFA cascade.
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noise performance of Optical fiber Transmission links that use non degenerate cascaded phase sensitive amplifiers
Optics Express, 2010Co-Authors: Zhi Tong, Magnus Karlsson, C J Mckinstrie, Carl Lundstrom, Peter A AndreksonAbstract:Based on semi-classical theory, the noise performance of a multi-span fiber Optical Transmission System employing a cascaded phase-insensitive amplifier (PIA) and phase-sensitive amplifiers (PSAs) is investigated. Compared with the pure-PIA and pure-PSA based in-line amplification schemes, the copier + PSA scheme is found to improve the System NF by up to 6 and 3 dB, respectively, in an optimized long-haul fiber link. In addition, this cascaded configuration will significantly relax the requirement for accurate phase- and wavelength-locking which is rigorously needed in the pure-PSA configuration. This scheme is also modulation-format independent. As a proof of concept, the NF of a fiber parametric amplifier based copier + PSA cascade with inter-stage attenuation representing the fiber link is measured, which shows a 1.8-dB total NF improvement over the conventional EDFA cascade.
Shiva Kumar - One of the best experts on this subject based on the ideXlab platform.
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reduction of nonlinear phase noise using Optical phase conjugation in quasi linear Optical Transmission Systems
Optics Express, 2007Co-Authors: Shiva KumarAbstract:An analytical expression for the variance of nonlinear phase noise for a quasi-linear System using the midpoint Optical phase conjugation (OPC) is obtained. It is shown that the the System with OPC and dispersion inversion (DI) can exactly cancel the nonlinear phase noise up to the first order in nonlinear coefficient if the amplifier and the end point of the System are equidistant from the OPC. It is found that the nonlinear phase noise variance of the midpoint phase-conjugated Optical Transmission System with DI is smaller than that of the System without DI.
Akihiro Maruta - One of the best experts on this subject based on the ideXlab platform.
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eigenvalue modulated Optical Transmission System
Opto-Electronics and Communications Conference, 2015Co-Authors: Akihiro MarutaAbstract:Invariable quantity during propagation in nonlinear dispersive fiber is an ideal information carrier. This is eigenvalue of the associated equation of the nonlinear Schrodinger equation. We introduce eigenvalue modulated Optical fiber Transmission System based on digital coherent technology.
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design of eigenvalue multiplexed multi level modulation Optical Transmission System
Australian Conference on Optical Fibre Technology, 2014Co-Authors: Yuki Matsuda, Hiroki Terauchi, Akihiro MarutaAbstract:The eigenvalue of the associated eigenvalue equation of the nonlinear Schrӧdinger equation is mathematically invariable. Therefore, this is an ideal information carrier. We report on a design of eigenvalue-multiplexed multi-level modulation Optical Transmission System.
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noise tolerance of eigenvalue modulated Optical Transmission System based on digital coherent technology
Australian Conference on Optical Fibre Technology, 2014Co-Authors: Hiroki Terauchi, Yuki Matsuda, Akifumi Toyota, Akihiro MarutaAbstract:Invariable eigenvalues which can be demodulated by solving the associated equation of the nonlinear Schr dinger equation are ideal information carriers in a nonlinear dispersive fiber. We experimentally study the noise tolerance of the eigenvalues.
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eigenvalue modulated Optical Transmission System based on digital coherent technology
International Conference on Photonics in Switching, 2013Co-Authors: Hiroki Terauchi, Akihiro MarutaAbstract:The ideal information carrier is invariable quantity during propagation in nonlinear dispersive fiber. This is eigenvalues of the associated equation of the nonlinear Schrodinger equation. We show the eigenvalue demodulation based on digital coherent technology.
Zhi Tong - One of the best experts on this subject based on the ideXlab platform.
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noise performance of Optical fiber Transmission links that use non degenerate cascaded phase sensitive amplifiers
Optics Express, 2010Co-Authors: Zhi Tong, Magnus Karlsson, C J Mckinstrie, Carl Lundstrom, Peter A AndreksonAbstract:Based on semi-classical theory, the noise performance of a multi-span fiber Optical Transmission System employing a cascaded phase-insensitive amplifier (PIA) and phase-sensitive amplifiers (PSAs) is investigated. Compared with the pure-PIA and pure-PSA based in-line amplification schemes, the copier + PSA scheme is found to improve the System NF by up to 6 and 3 dB, respectively, in an optimized long-haul fiber link. In addition, this cascaded configuration will significantly relax the requirement for accurate phase- and wavelength-locking which is rigorously needed in the pure-PSA configuration. This scheme is also modulation-format independent. As a proof of concept, the NF of a fiber parametric amplifier based copier + PSA cascade with inter-stage attenuation representing the fiber link is measured, which shows a 1.8-dB total NF improvement over the conventional EDFA cascade.
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noise performance of Optical fiber Transmission links that use non degenerate cascaded phase sensitive amplifiers
Optics Express, 2010Co-Authors: Zhi Tong, Magnus Karlsson, C J Mckinstrie, Carl Lundstrom, Peter A AndreksonAbstract:Based on semi-classical theory, the noise performance of a multi-span fiber Optical Transmission System employing a cascaded phase-insensitive amplifier (PIA) and phase-sensitive amplifiers (PSAs) is investigated. Compared with the pure-PIA and pure-PSA based in-line amplification schemes, the copier + PSA scheme is found to improve the System NF by up to 6 and 3 dB, respectively, in an optimized long-haul fiber link. In addition, this cascaded configuration will significantly relax the requirement for accurate phase- and wavelength-locking which is rigorously needed in the pure-PSA configuration. This scheme is also modulation-format independent. As a proof of concept, the NF of a fiber parametric amplifier based copier + PSA cascade with inter-stage attenuation representing the fiber link is measured, which shows a 1.8-dB total NF improvement over the conventional EDFA cascade.