High-resolution Brillouin fiber sensing using random phase coding of the pump and probe waves

Yair Antman; Nikolay Primerov; Luc Thévenaz; Avi Zadok

doi:10.1117/12.974748

17 October 2012 High-resolution Brillouin fiber sensing using random phase coding of the pump and probe waves

Yair Antman, Nikolay Primerov, Luc Thévenaz, Avi Zadok

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842116 (2012) https://doi.org/10.1117/12.974748
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Distributed temperature measurements with 1.2 cm resolution based on stimulated Brillouin scattering (SBS) in standard fibers are reported. High resolution is achieved by phase-coding both pump and probe waves with a high-rate, pseudo-random binary phase code. The SBS interaction is effectively confined to narrow correlation peaks. The separation between adjacent peaks, signifying the unambiguous measurement range, scales with the length of the modulation code and can therefore be made arbitrarily long. Measurements were performed over 40 meters of fiber, or 3300 resolution points. The technique is applicable to distributed measurements of birefringence and Brillouin frequency shift over polarization maintaining fibers.

Citation Download Citation

Yair Antman, Nikolay Primerov, Luc Thévenaz, and Avi Zadok "High-resolution Brillouin fiber sensing using random phase coding of the pump and probe waves", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842116 (17 October 2012); https://doi.org/10.1117/12.974748

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