Title :
PMD monitoring in WDM systems for NRZ data using a chromatic-dispersion-regenerated clock
Author :
Nezam, S.M.R.M. ; Song, Y.W. ; Willner, Alan E.
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We demonstrate a polarisation mode dispersion (PMD) monitor for NRZ signals that measures the effects of PMD on a chromatic-dispersion-generated clock tone. In NRZ transmission, no clock tone appears at a detector if the link chromatic dispersion is well compensated. In our method, we introduce fiber-Bragg based chromatic dispersion (negligible PMD) in the feedback loop of the PMD compensator to generate a 10 GHz clock tone within an NRZ signal.
Keywords :
Bragg gratings; clocks; monitoring; optical feedback; optical fibre communication; optical fibre dispersion; optical fibre polarisation; optical fibre testing; sensitivity; 10 GHz; GHz clock tone; NRZ data; NRZ signal; NRZ signals; PMD compensator; PMD monitoring; WDM system; chromatic-dispersion-generated clock tone; chromatic-dispersion-regenerated clock; enhanced sensitivity; feedback loop; fiber-Bragg grating-based chromatic dispersion; link chromatic dispersion; optical transmission link; polarisation mode dispersion; Chromatic dispersion; Clocks; Detectors; Feedback loop; Monitoring; Optical fiber polarization; Optical signal processing; Polarization mode dispersion; Signal generators; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036305
