Title :
Optically-filtered laser source enabling improved phase tracking in coherent transmission systems
Author :
Ng, W.C. ; Nguyen, An T. ; Ayotte, S. ; Park, C.S. ; Rusch, Leslie A.
Author_Institution :
ECE Dept., Univ. Laval, Quebec City, QC, Canada
Abstract :
We report phase tracking performance using an external cavity laser with and without optical filtering of high-frequency phase noise with an ultra-narrowband fiber Bragg grating. Phase tracking improvement is characterized when using a commercial, integrated coherent receiver. Noise suppression reduces tracking variance in a Wiener filter by 5 dB.
Keywords :
Bragg gratings; Wiener filters; laser cavity resonators; light coherence; light sources; optical filters; phase noise; Wiener filter; coherent transmission systems; external cavity laser; high-frequency phase noise; integrated coherent receiver; noise suppression; optical filtering; optically-filtered laser source; phase tracking performance; tracking variance; ultra-narrowband fiber Bragg grating; Filtering; Laser noise; Noise measurement; Optical fiber filters; Phase noise; Wiener filters;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
Conference_Location :
Amsterdam
