Birefringent Bragg Grating in C-Shaped Optical Fiber as a Temperature-Insensitive Refractometer

Autor:	Rex Xiao Tan, Daryl Ho, Chun Ho Tse, Yung Chuen Tan, Seong Woo Yoo, Swee Chuan Tjin, Morten Ibsen
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	fiber sensors fiber Bragg gratings specialty fibers refractometers Chemical technology TP1-1185
Zdroj:	Sensors, Vol 18, Iss 10, p 3285 (2018)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s18103285
Popis:	We demonstrate a simple-to-fabricate refractometer based on the inscription of fiber Bragg gratings in a special C-shaped optical fiber. The C-shaped fiber was drawn into shape using a quarter cladding removed preform of a commercial standard single-mode fiber by simple machining. The sensor did not suffer from cross-sensitivity of the refractive index with ambient temperature fluctuations, commonly occurring with many optical fiber refractometers. A refractive index sensitivity of 1300 pm per refractive index unit (RIU) was achieved without employing any additional sensitization techniques such as tapering or etching.
Databáze:	Directory of Open Access Journals
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