期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 33, 期 19, 页码 4063-4070出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2015.2461637
关键词
Estimation; system margin; optical signal-to-noise ratio; electrical signal-to-noise ratio; optical coherent receiver; nonlinear impairment; optical channel crosstalk
资金
- Chief Scientist Office of the Israeli Ministry of Industry, Trade and Labor within the Tera Santa Magnet consortium
We propose a novel and in-service method for in-band OSNR system margin and overall link impairment level monitoring based on the use of an optical coherent receiver. This technique relies on the estimation of the ESNR margin of the received optical coherent channel, scaled by a correction factor which depends on the modulation format and the overall link impairment level. This method is demonstrated experimentally for a 120 Gb/s DP-QPSK channel in both dispersion and nondispersion managed links with different impairment scenarios.
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