Title :
Experimental equalization of polarization dispersion
Author :
Winters, Jack H. ; Santoro, Mario A.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
A demonstration of the equalization of polarization dispersion in a direct-detection lightwave system is described. Polarization-maintaining fiber was used to generate first-order polarization dispersion, and equalization was achieved by a manually adjustable, analog tapped delay line that equalized the baseband electrical signal at the receiver. At a 1.1 Gb/s rate, a two-tap equalizer reduced the intersymbol interference due to polarization dispersion by more than 20 dB, eliminating a 3-dB eye-closure penalty. The error rate was reduced from 10/sup -6/ to below 10/sup -9/.<>
Keywords :
delay lines; light interference; light polarisation; optical communication equipment; optical dispersion; optical fibres; receivers; 1.1 Gbit/s; analog tapped delay line; baseband electrical signal; direct-detection lightwave system; error rate; eye-closure penalty; first-order polarization dispersion; intersymbol interference; polarisation maintaining fibre; polarization dispersion; receiver; two-tap equalizer; Delay lines; Dispersion; Distributed power generation; Fiber nonlinear optics; Nonlinear optics; Optical distortion; Optical feedback; Optical fiber polarization; Optical polarization; Optical receivers;
Journal_Title :
Photonics Technology Letters, IEEE
