Highly sensitive distributed birefringence measurements based on a two-pulse interrogation of a dynamic Brillouin grating

Marcelo A. Soto; Andrey Denisov; Xabier Angulo-Vinuesa; Sonia Martin-Lopez; Luc Thévenaz; Miguel Gonzalez-Herraez

doi:10.1117/12.2267471

23 April 2017 Highly sensitive distributed birefringence measurements based on a two-pulse interrogation of a dynamic Brillouin grating

Marcelo A. Soto, Andrey Denisov, Xabier Angulo-Vinuesa, Sonia Martin-Lopez, Luc Thévenaz, Miguel Gonzalez-Herraez

Author Affiliations +

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103238Z (2017) https://doi.org/10.1117/12.2267471
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

A method for distributed birefringence measurements is proposed based on the interference pattern generated by the interrogation of a dynamic Brillouin grating (DBG) using two short consecutive optical pulses. Compared to existing DBG interrogation techniques, the method here offers an improved sensitivity to birefringence changes thanks to the interferometric effect generated by the reflections of the two pulses. Experimental results demonstrate the possibility to obtain the longitudinal birefringence profile of a 20 m-long Panda fibre with an accuracy of ~10^-8 using 16 averages and 30 cm spatial resolution. The method enables sub-metric and highly-accurate distributed temperature and strain sensing.

Citation Download Citation

Marcelo A. Soto, Andrey Denisov, Xabier Angulo-Vinuesa, Sonia Martin-Lopez, Luc Thévenaz, and Miguel Gonzalez-Herraez "Highly sensitive distributed birefringence measurements based on a two-pulse interrogation of a dynamic Brillouin grating", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103238Z (23 April 2017); https://doi.org/10.1117/12.2267471

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