Power-referenced refractometer based on hybrid fiber grating

Xinyong Dong; Jie Zheng; Perry Ping Shum

doi:10.1117/12.2037187

20 December 2013 Power-referenced refractometer based on hybrid fiber grating

Xinyong Dong, Jie Zheng, Perry Ping Shum

Proceedings Volume 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 90440G (2013) https://doi.org/10.1117/12.2037187
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

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.

Citation Download Citation

Xinyong Dong, Jie Zheng, and Perry Ping Shum "Power-referenced refractometer based on hybrid fiber grating", Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 90440G (20 December 2013); https://doi.org/10.1117/12.2037187

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