Title :
Microwave modulation characteristics of semiconductor lasers with optical feedback
Author :
Helms, J. ; Petermann, K.
Author_Institution :
Tech. Univ. Berlin, West Germany
Abstract :
It is shown that in the direct modulation response of laser diodes a ripple occurs due to optical feedback from the transmission fibre. For feedback levels close to the coherence-collapse regime the ripple may be of the order of several 10 dBs. To reduce the ripple to below 1 dB, the optical feedback must be -6.
Keywords :
optical modulation; semiconductor junction lasers; coherence-collapse regime; direct modulation response; laser diodes; optical feedback; ripple; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890915
