Experimental investigation on feedback insensitivity in semiconductor ring lasers

The insensitivity to optical feedback is experimentally measured for a semiconductor ring laser (SRL) and compared to that of a Fabry-Perot laser (FPL) fabricated with the same technology and on the same material. An analysis of the optical spectra reveals that the SRL remains nearly unaffected for...

Full description

Saved in:
Bibliographic Details
Published inOptics letters Vol. 43; no. 9; p. 1974
Main Authors Li, Song-Sui, Pusino, Vincenzo, Chan, Sze-Chun, Sorel, Marc
Format Journal Article
LanguageEnglish
Published United States 01.05.2018
Online AccessGet more information

Cover

More Information
Summary:The insensitivity to optical feedback is experimentally measured for a semiconductor ring laser (SRL) and compared to that of a Fabry-Perot laser (FPL) fabricated with the same technology and on the same material. An analysis of the optical spectra reveals that the SRL remains nearly unaffected for values of optical feedback as strong as -23  dB. Furthermore, through both optical linewidth and self-mixing measurements, we show that the tolerance to feedback in SRLs is 25-30 dB stronger than in FPLs. This property makes SRLs very interesting candidates for the development of feedback-insensitive optical sources.
ISSN:1539-4794
DOI:10.1364/OL.43.001974