Title :
Effects of phase-to-intensity noise conversion by multiple reflections on gigabit-per-second DFB laser transmission systems
Author :
Gimlett, James L. ; Cheung, Nim K.
Author_Institution :
Bellcore, Red Bank, NJ, USA
fDate :
6/1/1989 12:00:00 AM
Abstract :
Large power penalties and bit-error-rate floors have been observed in some Gb/s systems using distributed feedback (DFB) lasers, which could be attributed to interferometric conversion of laser phase noise to intensity noise by multiple reflections at connectors and splices. The authors calculated the power spectral density of the interferometric noise and its impact on system performance as a function of both the magnitude and number of reflections, and they compare the theoretical predictions with experimental results. Their studies indicate that connectors and splices with return losses of more than about 25 dB are required for the reliable operation of Gb/s fiber transmission systems, even if optical isolators are used
Keywords :
distributed feedback lasers; light reflection; noise; optical fibres; optical links; optical losses; semiconductor junction lasers; DFB laser; Gbit/s laser transmission systems; bit-error-rate floors; connectors; distributed feedback lasers; fiber transmission systems; intensity noise; interferometric conversion; laser phase noise; multiple reflections; optical isolators; phase-to-intensity noise conversion; power penalties; power spectral density; return losses; splices; system performance; Acoustic reflection; Connectors; Distributed feedback devices; Laser feedback; Laser noise; Laser theory; Optical reflection; Phase noise; Power lasers; System performance;
Journal_Title :
Lightwave Technology, Journal of
