NDLI: Coherent crosstalk in ultradense WDM systems

Content Provider	IEEE Xplore Digital Library
Author	Winzer, P.J. Pfennigbauer, M. Essiambre, R.-J.
Copyright Year	1983
Abstract	We present extensive numerical studies on the determination of coherent wavelength-division multiplexing (WDM) crosstalk penalties for ultradense wavelength-division multiplexed (DWDM) systems, focusing on carrier-suppressed return-to-zero (CSRZ) as well as on 67% duty cycle differential phase-shift keying (67% RZ-DPSK) at a spectral efficiency of 0.8 b/s/Hz. Our analyses reveal large statistical variations in the predicted required optical signal-to-noise ratio (OSNR) when changing the WDM channels' interference conditions, in particular their relative optical phases and their relative time shifts. The strong impact of the exact WDM interference conditions can lead to simulation inaccuracies of many decibels when using standard OSNR simulations techniques. In measurements of DWDM system performance, the long averaging time of bit error ratio (BER) test sets can hide these burst-error generating penalty variations, and may, therefore, lead to wrong interpretations, especially for systems employing forward error correction (FEC). To overcome the DWDM simulation problem, we introduce and thoroughly assess a new simulation technique that allows us to efficiently and accurately capture the average required OSNR penalty for DWDM systems with negligible statistical error.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1734
Ending Page	1744
Page Count	11
File Size	918094
File Format	PDF
ISSN	07338724
Volume Number	23
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wavelength division multiplexing Signal to noise ratio Optical noise Optical crosstalk Interference Forward error correction Differential phase shift keying Signal analysis Time measurement System performance wavelength-division multiplexing (WDM) Bit error ratio (BER) coherent crosstalk forward error correction (FEC) in-band crosstalk
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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Performance analysis of differential-phase-shift-keying optical receivers in the presence of in-band crosstalk noise

Choice of MUX/DEMUX filter characteristics for NRZ, RZ, and CSRZ DWDM systems

Optimizing the FEC Overhead in a 100 GbE PDM-QPSK Digital Coherent Transmission System

BER estimation of optical WDM RZ-DPSK systems through the differential phase Q

Dispersion tolerance of coherent WDM

Scalability of spectrum-sliced DWDM transmission and its expansion using forward error correction

10-Gb/s upgrade of bidirectional CWDM systems using electronic equalization and FEC

Single-span transmission of WDM RZ-DPSK signal over 310-km standard SMF without using FEC and remote-pumping

Analysis of in-band crosstalk-crosstalk beat noise and obtaining Bit Error Rate in a WDM receiver

Coherent crosstalk in ultradense WDM systems

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