Title :
Real-time measurement of accumulated chromatic dispersion for automatic dispersion compensation
Author :
Wielandy, S. ; Fishteyn, M. ; Her, T. ; Kudelko, D. ; Zhang, C.
Author_Institution :
OFS Labs., Somerset, NJ, USA
fDate :
9/26/2002 12:00:00 AM
Abstract :
A differential measurement scheme using nonlinear optical detection in a silicon avalanche photodiode that was used to measure both the magnitude and sign of the accumulated chromatic dispersion of a stream of laser pulses at 1550 nm is demonstrated. This differential dispersion measurement scheme inherently provides a continuous error signal that was used as feedback to a tunable dispersion compensator so that laser pulses experienced zero net dispersion
Keywords :
avalanche photodiodes; compensation; feedback; optical fibre communication; optical fibre dispersion; optical signal detection; optical variables measurement; 1550 nm; Si; Si APD; accumulated chromatic dispersion; automatic dispersion compensation; avalanche photodiode; continuous error signal; differential measurement scheme; dispersion measurement; feedback; laser pulse stream; nonlinear optical detection; real-time measurement; tunable dispersion compensator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020833
