Title :
Enhancement of refractive index sensitivity for rectangular-microfiber Sagnac loop sensors
Author :
Jie Li ; Li-Peng Sun ; Shuai Gao ; Yang Ran ; Bai-Ou Guan
Author_Institution :
Inst. of Photonics Technol., Jinan Univ., Guangzhou, China
Abstract :
We demonstrate a method for obtainment of high refractive index sensitivity by inserting a highly-birefringent bow-tie fiber into a rectangular-microfiber Sagnac loop. The sensitivity is enhanced significantly when a certain condition is satisfied. The maximum absolute sensitivity reaches 34772 nm/refractive-index unit (RI-unit), which is around five times of the value, i.e. 7069nm/RI-unit, without bow-tie fiber.
Keywords :
birefringence; fibre optic sensors; refractive index measurement; highly birefringent bow-tie fiber; rectangular microfiber Sagnac loop sensors; refractive index sensitivity enhancement; Lasers; Length measurement; Optical fiber devices; Optical fiber polarization; Sensors; Sagnac loop; birefringence; bow-tie fiber; rectangular microfiber; sensitivity;
Conference_Titel :
Photonics Global Conference (PGC), 2012
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2513-4
DOI :
10.1109/PGC.2012.6458127
