High precision estimation of optical feedback factor and linewidth enhancement using non-dominated sequential genetic algorithm II (NSGA-II)

Jinyuan Yuan; Bin Liu

doi:10.1117/12.2687227

27 November 2023 High precision estimation of optical feedback factor and linewidth enhancement using non-dominated sequential genetic algorithm II (NSGA-II)

Jinyuan Yuan, Bin Liu

Author Affiliations +

Proceedings Volume 12761, Semiconductor Lasers and Applications XIII; 1276111 (2023) https://doi.org/10.1117/12.2687227
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Self-mixing interferometry is an interferometric technique based on the self-mixing effect. Its unique structure and operating principle allow part of the light emitted by the laser to be reflected back into the laser cavity via a remote target, producing optical output power modulations and displayed as interference waveforms. The shape of these waveforms is determined by the optical feedback factor and the linewidth enhancement factor, which also affect the behavior and measurement performance of the self-mixing interferometric system. To address the need for optical measurements in the medium feedback case, this paper proposes a method to accurately estimate the optical feedback factor and linewidth enhancement factor using the non-dominated sorting genetic algorithm II (NSGA-II). The effectiveness and robustness of the method are verified by simulation and experimental results, and preliminary tests show that it can achieve an accuracy of 0.35% and 0.56% in estimating the optical feedback factor and linewidth enhancement factor. The method has potential for practical engineering applications and promotes the development of self-mixing interferometry.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jinyuan Yuan and Bin Liu "High precision estimation of optical feedback factor and linewidth enhancement using non-dominated sequential genetic algorithm II (NSGA-II)", Proc. SPIE 12761, Semiconductor Lasers and Applications XIII, 1276111 (27 November 2023); https://doi.org/10.1117/12.2687227

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available