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Proceedings Paper

Power-referenced refractometer based on hybrid fiber grating
Author(s): Xinyong Dong; Jie Zheng; Perry Ping Shum
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Paper Abstract

A power-referenced fiber refractometer based on a hybrid fiber grating formed by a tilted-fiber Bragg grating (TFBG) cascading by a chirped-fiber Bragg grating (CFBG) is proposed and experimentally demonstrated. The optical signal reflected by the CFBG passes twice through the TFBG that enhances sensitivity of the refractometer. In addition, the optical signal is propagating all the way in the fiber core so that the extra insertion loss is low. Refractive index measurement with sensitivity up to 597.2 μW/R.I.U. is achieved within the range from 1.333 to ~1.42. The maximum detectable refractive index is ~1.45.

Paper Details

Date Published: 20 December 2013
PDF: 5 pages
Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 90440G (20 December 2013); doi: 10.1117/12.2037187
Show Author Affiliations
Xinyong Dong, China Jiliang Univ. (China)
Jie Zheng, China Jiliang Univ. (China)
Nanyang Technological Univ. (Singapore)
CINTRA CNRS/NTU/THALES (Singapore)
Perry Ping Shum, Nanyang Technological Univ. (Singapore)
CINTRA CNRS/NTU/THALES (Singapore)


Published in SPIE Proceedings Vol. 9044:
2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Brian Culshaw; Xuping Zhang; Anbo Wang, Editor(s)

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