Journal ArticleDOI
Resonances in cross-phase modulation impairment in wavelength-division-multiplexed lightwave transmission
TLDR
In this article, the authors have observed cross-phase modulation impairment resonances in wavelength division multiplexed lightwave systems when channels are spaced such that there occurs an integral number of bit walkthroughs per amplifier span.Abstract:
Cross-phase modulation impairment resonances exist in wavelength-division-multiplexed lightwave systems when channels are spaced such that there occurs an integral number of bit walkthroughs per amplifier span. We have observed these resonances in transmission through 624-km standard single-mode fiber systems having amplifier span lengths of 40, 80, or 120 km. Q measurements of a 2.5-Gb/s five-channel system over 8/spl times/80 km with +7 dBm/channel predict on-resonance bit-error rates (BER's) that are several orders of magnitude higher than off-resonance BER's.read more
Citations
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Book ChapterDOI
Fiber-Optic Communications
TL;DR: In this article, the authors focus on how the nonlinear effects influence the design of wavelength-division multiplexing (WDM) lightwave systems, and how an optical bit stream is affected by losses, group-velocity dispersion (GVD), and various nonlinear effect as it propagates down the fiber link.
Journal ArticleDOI
Error probability of DPSK signals with cross-phase modulation induced nonlinear phase noise
TL;DR: In this article, the error probability for differential phase-shift keying (DPSK) signals contaminated by both self-and cross-phase modulation (SPM and XPM)-induced nonlinear phase noise is derived analytically for WDM systems.
Journal ArticleDOI
Second-order theory for self-phase modulation and cross-phase modulation in optical fibers
Shiva Kumar,Dong Yang +1 more
TL;DR: In this article, a second-order perturbation technique for the study of self-phase modulation (SPM) and XPM effects in optical fibers was developed. But, the results obtained using the second order perturbations are in good agreement with numerical simulations even when the dispersion distance is longer than the nonlinear length.
Journal ArticleDOI
A comprehensive study on XPM- and SRS-induced noise in cascaded IM-DD optical fiber transmission systems
Zhi Jiang,Chongcheng Fan +1 more
TL;DR: In this article, a comprehensive study of XPM- and SRS-induced crosstalk noise evolution as well as their interaction along lossy, nonlinear dispersive fiber in a cascaded IM-DD system is performed analytically and numerically.
Journal ArticleDOI
Cross-phase modulation suppressor for multispan dispersion-managed WDM transmissions
Giovanni Bellotti,S. Bigo +1 more
TL;DR: A new suppression technique of the transmission impairments caused by cross-phase modulation in dispersion-managed links is presented, which can be implemented through a simple, passive, and integratable device.
References
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Journal ArticleDOI
Receiver design for digital fiber optic communication systems, II
TL;DR: In this article, it is shown that a proper front-end design incorporates a high-impedance preamplifier which tends to integrate the detector output, and this must be followed by proper equalization in the later stages of the linear channel.
Journal ArticleDOI
Cross-phase modulation in intensity modulation-direct detection WDM systems with multiple optical amplifiers and dispersion compensators
TL;DR: In this article, a generalized model of the cross-phase modulation induced by an arbitrary number of channels through XPM is derived, compared to simulation results and its validity range is presented.
Journal ArticleDOI
Cross-phase modulation in fiber links with multiple optical amplifiers and dispersion compensators
TL;DR: In this paper, the authors theoretically and experimentally investigated the cross-phase modulation (XPM) effect in optical fiber links with multiple optical amplifiers and dispersion compensators, and they showed that the XPM effect can be modeled as a phase modulator with inputs from the intensity of copropagating waves.
Journal ArticleDOI
Dependence of cross-phase modulation on channel number in fiber WDM systems
TL;DR: In this article, the authors show that cross-phase modulation does not limit the number of wavelength channels that a single optical fiber can support, and that even a moderate amount of dispersion tends to cancel out the influence of cross phase modulation, so that beyond a certain wavelength spacing, additional channels do not interfere with the channel under consideration.