Sensitivity enhancement of Faraday effect based heterodyning fiber laser magnetic field sensor with the assistance of CO2-laser treatment

Linghao Cheng; Jianlei Han; Long Jin; Zhenzhen Guo; Bai-Ou Guan

doi:10.1117/12.2059439

2 June 2014 Sensitivity enhancement of Faraday effect based heterodyning fiber laser magnetic field sensor with the assistance of CO₂-laser treatment

Linghao Cheng, Jianlei Han, Long Jin, Zhenzhen Guo, Bai-Ou Guan

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915727 (2014) https://doi.org/10.1117/12.2059439
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We have proposed a novel magnetic field sensor based on orthogonally-polarized dual-frequency fiber laser and Faraday effect. In this paper, we propose a method to enhance the sensitivity of such Faraday effect based heterodyning fiber laser magnetic field sensor by tuning the intra-cavity intrinsic linear birefringence. We demonstrate that the sensitivity to magnetic field intensity is inversely proportional to the linear birefringence. A CO₂-laser treatment is therefore proposed to tune the intra-cavity linear birefringence. With CO₂-laser treatment to lower the intra-cavity linear birefringence, the sensitivities of heterodyning fiber laser sensors to magnetic field can be enhanced.

Citation Download Citation

Linghao Cheng, Jianlei Han, Long Jin, Zhenzhen Guo, and Bai-Ou Guan "Sensitivity enhancement of Faraday effect based heterodyning fiber laser magnetic field sensor with the assistance of CO₂-laser treatment", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915727 (2 June 2014); https://doi.org/10.1117/12.2059439

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