Title :
Enhancement of PMD compensator efficiency by optical pre-filtering
Author :
Bülow, Henning ; Buchali, Fred ; Poirrier, Julien ; Baumert, Wolfgang ; Lanne, Stéphanie
Author_Institution :
Alcatel Res. & Innovation, Stuttgart, Germany
Abstract :
A new concept for PMD compensation has been proposed which allows to increase the efficiency of a given PMD compensator by insertion of a narrow band optical filter prior to the compensator. For NRZ signal the optimum filter is a vestigial sideband filter (VSB) having a bandwidth of less than the bit rate and a position for left or right sideband extraction. The concept of pre-filtering was confirmed by experiment at 40 Gb/s using a 30 GHz FBG filter and analyzed theoretically showing that the measured reduction of the probability (10-2) for a PMD induced BER degradation also holds for a more system relevant lower value of less than 10-3.
Keywords :
Bragg gratings; compensation; optical communication equipment; optical fibre dispersion; optical fibre filters; optical fibre polarisation; probability; 30 GHz; 40 Gbit/s; FBG filter; NRZ signal; PMD compensation; PMD compensator efficiency; PMD induced BER degradation; narrow band optical filter; optical pre-filtering; optimum filter; probability; sideband extraction; vestigial sideband filter; Birefringence; Cables; Frequency; Optical feedback; Optical fiber polarization; Optical fiber testing; Optical polarization; Optical pulses; Spatial resolution; Wavelength measurement;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036429
