title: In-service light path PMD (polarization mode dispersion) monitoring by PMD compensation.
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.
authors.affiliation: Optical Polarization Research Center, College of Precision Instrument and Opto-electronics engineering, Tianjin University, Tianjin, China. syao@generalphotonics.com
authors.forename: X Steve
authors.initials: XS
authors.lastname: Yao
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Chen
authors.forename: T J
authors.initials: TJ
authors.lastname: Xia
authors.forename: Glenn
authors.initials: G
authors.lastname: Wellbrock
authors.forename: David
authors.initials: D
authors.lastname: Chen
authors.forename: Daniel
authors.initials: D
authors.lastname: Peterson
authors.forename: Paul
authors.initials: P
authors.lastname: Zhang
authors.forename: Ansel
authors.initials: A
authors.lastname: Belisle
authors.forename: Lei
authors.initials: L
authors.lastname: Dong
authors.forename: Tao
authors.initials: T
authors.lastname: Yu
mesh_terms: D003195:Computer Communication Networks / Q000295:instrumentation*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008027:Light; D010783:Photometry / Q000295:instrumentation*; D012542:Scattering, Radiation