ANALYSIS OF EXTERNAL OPTICAL FEEDBACK ON DISTRIBUTED-FEEDBACK SEMICONDUCTOR-LASERS ABOVE-THRESHOLD

Authors
WU HJ CHANG HC
Citation
Hj. Wu et Hc. Chang, ANALYSIS OF EXTERNAL OPTICAL FEEDBACK ON DISTRIBUTED-FEEDBACK SEMICONDUCTOR-LASERS ABOVE-THRESHOLD, IEEE photonics technology letters, 5(10), 1993, pp. 1168-1170
Citations number
14
Categorie Soggetti
Optics,"Physics, Applied
Journal title
IEEE photonics technology letters → ACNP
ISSN journal
10411135
Volume
5
Issue
10
Year of publication
1993
Pages
1168 - 1170
Database
ISI
SICI code
1041-1135(1993)5:10<1168:AOEOFO>2.0.ZU;2-R
Abstract
An analysis of external optical feedback on distributed-feedback (DFB) semiconductor lasers above threshold is presented. It is based on a n umerical model taking into account the longitudinal spatial hole burni ng (SHB) effect, which has been recently known to be an important phen omenon for DFB lasers above threshold. Numerical results for a typical index-coupled quarter-wave-shifted (QWS) DFB laser with a moderate co upling coefficient (kappaL = 3) are given. It was found that the SHB-e ffect can affect the sensitivity to feedback for DFB lasers above thre shold.