7 November 2012 Optical fiber hydrogen sensor based on micro interferometer
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84217R (2012); doi: 10.1117/12.970263
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
In this paper, a femtosecond (fs) laser fabricated fiber in-line micro Michelson interferometer (MI) with palladium (Pd) film deposited on the fiber end face for hydrogen detection is proposed and demonstrated. Beam Propagation Method (BPM) is used to analyze the influence of refractive index (RI) of Pd film on reflection spectrum. As for the experimental results, the variation of optical power and shift of interference peak wavelength are -4.904 dBm and -4.2 nm respectively with the increase of hydrogen concentration from 0% to 16%. The developed system has high potential in hydrogen sensing with high sensitivity.
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Min Wang, Jie Cheng, Xun Yu, Jixiang Dai, Guilin Zhang, Minghong Yang, "Optical fiber hydrogen sensor based on micro interferometer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84217R (7 November 2012); doi: 10.1117/12.970263; https://doi.org/10.1117/12.970263
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KEYWORDS
Hydrogen

Palladium

Reflection

Femtosecond phenomena

Optical fibers

Sensors

Beam propagation method

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