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Opt Lett
; 40(9): 2012-5, 2015 May 01.
Article
in English
| MEDLINE
| ID: mdl-25927771
ABSTRACT
We experimentally studied the performance of a delay-line interferometer-based optical signal-to-noise ratio (OSNR) monitor that is pre-calibrated in optimal conditions for 25-Gbaud pol-muxed quadrature-amplitude-modulation (QAM) signals, when unpredicted changes outside the monitor occurred either in the transmitter or the link.