Refractive Index Sensing Based on a Fiber Bragg Grating with Micro-Holes

Min Wei Yang; D. N. Wang; C. R. Liao

doi:10.4028/www.scientific.net/KEM.495.194

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Refractive Index Sensing Based on a Fiber Bragg Grating with Micro-Holes
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 495Refractive Index Sensing Based on a Fiber Bragg...

Refractive Index Sensing Based on a Fiber Bragg Grating with Micro-Holes

Abstract:

A refractive index sensor based on single fiber Bragg grating with multiple micro-holes is proposed. The micro-holes are drilled by use of femtosecond laser micromachining. The key feature of the sensor is that a simultaneous and independent refractive index and temperature sensing measurement can be implemented by simply detecting the grating resonant wavelength shift and its intensity variation, respectively. The refractive index sensitivity obtained is 29.50 dB/RIU (refractive index unit), within the refractive index range between 1.30 and 1.45.

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Periodical:

Key Engineering Materials (Volume 495)

Pages:

194-197

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.495.194

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Online since:

November 2011

Authors:

Min Wei Yang, D. N. Wang, C. R. Liao

Keywords:

Femtosecond Laser Micromachining, Fiber Bragg Grating (FBG), Refractive Index Sensing, Temperature Sensing

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