Analysis and Design of External Cavity, Strong Feedback, Semiconductor Lasers for Use with Coherent Optical Communication Systems

Il-Whan Oh; Harish R. D. Sunak

doi:10.1117/12.937695

14 January 1987 Analysis and Design of External Cavity, Strong Feedback, Semiconductor Lasers for Use with Coherent Optical Communication Systems

Il-Whan Oh, Harish R. D. Sunak

Author Affiliations +

Proceedings Volume 0723, Progress in Semiconductor Laser Diodes; (1987) https://doi.org/10.1117/12.937695
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

External cavity, strong optical feedback, semiconductor lasers are analyzed using a rotated ellipse gain(REG) model. The model considers laser diode characteristics as well as the effects of optical feedback. Theoretical calculations on this strong feedback structure are developed in terms of amplification, injection locking, and mode ratio. Threshold current is expressed as a function of wavelength and temperature. Also various formulae for threshold current reduction, effective current, amplified output power, and reduced spectral linewidth are presented. From the amplified output power we calculate the spectral linewidth. We analyze in more detail the theoretical work of Patzak et al and show that spontaneous emission is reduced by frequency selective strong optical feedback. In designing external cavity lasers with strong feedback, mode ratio has to be larger than 100 for stable output power and frequency. It is possible to obtain many characteristic properties of the solitary laser diode with the help of the REG model.

Citation Download Citation

Il-Whan Oh and Harish R. D. Sunak "Analysis and Design of External Cavity, Strong Feedback, Semiconductor Lasers for Use with Coherent Optical Communication Systems", Proc. SPIE 0723, Progress in Semiconductor Laser Diodes, (14 January 1987); https://doi.org/10.1117/12.937695

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