Study of DFB fiber laser intensity noise and its suppression

Yanjie Zhao; Chang Wang; Jiasheng Ni; Jun Chang; Pengpeng Wang; Gangding Peng; Tongyu Liu; Qingpu Wang

doi:10.1117/12.914390

30 January 2012 Study of DFB fiber laser intensity noise and its suppression

Yanjie Zhao, Chang Wang, Jiasheng Ni, Jun Chang, Pengpeng Wang, Gangding Peng, Tongyu Liu, Qingpu Wang

Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83511G (2012) https://doi.org/10.1117/12.914390
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

We proposed an experimental investigation into the low-frequency intensity noise characteristics of erbium-doped distributed feedback fiber lasers (DFB-FL). And the paper presented a simple self-injection locking (SIL) configuration of DFB fiber laser to suppress the intensity noise. One of the reasons caused intensity noise is the existence of multimode in the DFB-FL. SIL inhibits other modes while enhances dominant mode. Process of locking mode occurred in the DFB-FL was measured in this paper. Comparison of the output powers with and without injection gives a sufficient proof, that it can realize the stable lasing by injecting the feedback laser into the cavity again. When the current of 980nm pump is about 175mA, the intensity noise is suppressed about 25 dB, and relaxation oscillation frequency decreased from 126.5 KHz to 60 KHz in this paper. The results have potential application in high sensitive fiber sensors and optical communication.

Citation Download Citation

Yanjie Zhao, Chang Wang, Jiasheng Ni, Jun Chang, Pengpeng Wang, Gangding Peng, Tongyu Liu, and Qingpu Wang "Study of DFB fiber laser intensity noise and its suppression", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83511G (30 January 2012); https://doi.org/10.1117/12.914390

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