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Opt Express. 2010 Dec 20;18(26):27306-18. doi: 10.1364/OE.18.027306.

In-service light path PMD (polarization mode dispersion) monitoring by PMD compensation.

Author information

  • 1Optical Polarization Research Center, College of Precision Instrument and Opto-electronics engineering, Tianjin University, Tianjin, China. syao@generalphotonics.com

Abstract

We describe a novel method of measuring PMD (polarization mode dispersion) of an in-service DWDM system by PMD compensation. We successfully demonstrate the method in a 1500-km ultra-long haul DWDM test bed. We further verify the feasibility of the method for in-service light path PMD monitoring in a field trial in a revenue-generating route in Verizon Network, and obtain an accurate PMD value without impacting live network traffic. The discrepancy between the measured and expected PMD values is less than 6% for all cases tested.

PMID:
21197009
[PubMed - indexed for MEDLINE]
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