Depletion in a distributed Brillouin fiber sensor: practical limitation and strategy to avoid it

Thévenaz, Luc; Foaleng Mafang, Stella; Lin, Jie

doi:10.1117/12.899540

Depletion in a distributed Brillouin fiber sensor: practical limitation and strategy to avoid it

Thévenaz, Luc ; Foaleng Mafang, Stella ; Lin, Jie

Energy transfer between the interacting waves in a distributed Brillouin sensor can result in a distorted measurement of the local Brillouin gain spectrum, leading to systematic error. We demonstrate here that this behavior can be fully and precisely modeled, and an excellent quantitative agreement is found with experimental tests. Strict guidelines can be enunciated from this description to make the impact of depletion negligible, for any type and any length of fiber.

Published in:

Proc. SPIE, 7753, 7753A5

Presented at:

21st International Conference on Optical Fiber Sensors, Ottawa, Canada, May 15-19, 2011

Year:

2011

Publisher:

SPIE

Keywords:

Fiber optics ; Optical fiber sensors ; distributed fiber sensor ; stimulated Brillouin scattering ; Nonlinear optics

DOI:

10.1117/12.899540