Spectrally Efficient Multiplexing: NYQUIST‐WDM

Bosco, Gabriella

doi:10.1002/9781119078289.ch4

Cited by 5 publications

(1 citation statement)

References 67 publications

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“…Due to the rectangular-shaped spectrum and sinc-shaped temporal waveform, Nyquist pulses have high value in modern communication technology, from electronic communications to optical communications and ultrafast science. For example, in the field of optical communications, [2][3][4][5][6][7][8][9][10][11][12][13][14][15] Nyquist pulses can increase the bandwidth of the systems. [16] Various studies on Nyquist pulses have been reported.…”

Section: Introductionmentioning

confidence: 99%

On the generation of high-quality Nyquist pulses in mode-locked fiber lasers

Ren 任,

Ge 葛,

Li 李

et al. 2024

Chinese Phys. B

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Nyquist pulses have wide applications in many areas, from electronics to optics. Mode-locked lasers are ideal platform to generate such pulses. However, how to generate high-quality Nyquist pulses in mode-locked lasers remain elusive. We address this problem by managing different physical effects in mode-locked fiber lasers through extensive numerical simulations. We find that net dispersion, linear loss, gain and filter shaping can affect the quality of Nyquist pulses significantly. We also demonstrate that Nyquist pulses experiences similariton shaping due to the nonlinear attractor effect in the gain medium. Our work may contribute to the design of Nyquist pulse sources and enrich the understanding of pulse shaping dynamics in mode-locked lasers.

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Section: Introductionmentioning

confidence: 99%

On the generation of high-quality Nyquist pulses in mode-locked fiber lasers

Ren 任,

Ge 葛,

Li 李

et al. 2024

Chinese Phys. B

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Optical Transponders

Bosco

Elbers

2020

Springer Handbooks

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Analysis of Inter-Core Crosstalk in Weakly-Coupled Multi-Core Fiber Coherent Systems

Pinheiro

Rebola

Cartaxo

2021

J. Lightwave Technol.

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The influence of the inter-core crosstalk (ICXT) on the performance of weakly-coupled multi-core fiber (WC-MCF) systems with coherent detection and arbitrary inter-core skew is studied numerically and analytically. We analyze the evolution of the instantaneous ICXT power, induced by polarization division multiplexed quadrature amplitude modulation signals, short term average crosstalk (STAXT), and detected ICXT components along the time to get insight on how the ICXT affects the coherent system performance. Numerical results show that, with low skewsymbol rate product ( 1), the STAXT can have large fluctuations along the time and the variance of the detected ICXT can also have large fluctuations along the time, causing large variations of the bit error rate (BER) along time. With large skew-symbol rate product ( 1), the STAXT is almost constant along the time and, although the detected ICXT varies along time, the detected ICXT variance is almost constant along time leading to very small fluctuations of BER along time. Analytical expressions for the variance of the coherently detected ICXT, average BER and optical signal-to-noise ratio (OSNR) penalty are proposed and shown to agree with Monte-Carlo simulation results for arbitrary skew, modulation format order and roll-off factor of the transmitted signals. Numerical results show that the maximum allowable ICXT level for 1 dB OSNR penalty increases when the skew augments and can reach 1.3 dB for a roll-off factor of 1. For most cases of interest of low roll-off factor, the increase of the maximum allowable ICXT level is very small. It is shown that the OSNR penalty estimates agree quite well with other authors' experimental results (with nearly zero roll-off factor).

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Spectrally Efficient Multiplexing: NYQUIST‐WDM

Cited by 5 publications

References 67 publications

On the generation of high-quality Nyquist pulses in mode-locked fiber lasers

On the generation of high-quality Nyquist pulses in mode-locked fiber lasers

Optical Transponders

Analysis of Inter-Core Crosstalk in Weakly-Coupled Multi-Core Fiber Coherent Systems

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