Experimental investigation on feedback insensitivity in semiconductor ring lasers

Li, S.-S., Pusino, V. , Chan, S.-C. and Sorel, M. (2018) Experimental investigation on feedback insensitivity in semiconductor ring lasers. Optics Letters, 43(9), pp. 1974-1977. (doi: 10.1364/OL.43.001974)

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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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Sorel, Professor Marc and Pusino, Mr Vincenzo
Authors: Li, S.-S., Pusino, V., Chan, S.-C., and Sorel, M.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN (Online):1539-4794
Published Online:18 April 2018
Copyright Holders:Copyright © 2018 Optical Society of America
First Published:First published in Optics Letters 43(9):1974-1977
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
745171Investigations on Semiconductor Ring Lasers under Optical FeedbackMarc SorelThe Royal Society (ROYSOC)KT160036ENG - ENGINEERING ELECTRONICS & NANO ENG