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Proceedings Paper

All-fiber photoacoustic gas sensor with graphene nano-mechanical resonator as the acoustic detector
Author(s): Tan Yanzhen; Yang Fan; Ma Jun; Ho Hoi Lut; Jin Wei
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Paper Abstract

We demonstrate an all-optical-fiber photoacoustic (PA) spectrometric gas sensor with a graphene nano-mechanical resonator as the acoustic detector. The acoustic detection is performed by a miniature ferrule-top nano-mechanical resonator with a ∼100-nm-thick, 2.5-mm-diameter multilayer graphene diaphragm. Experimental investigation showed that the performance of the PA gas sensor can be significantly enhanced by operating at the resonance of the grapheme diaphragm where a lower detection limit of 153 parts-per-billion (ppb) acetylene is achieved. The all-fiber PA sensor which is immune to electromagnetic interference and safe in explosive environments is ideally suited for real-world remote, space-limited applications and for multipoint detection in a multiplexed fiber optic sensor network.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96341K (28 September 2015); doi: 10.1117/12.2194447
Show Author Affiliations
Tan Yanzhen, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Yang Fan, The Hong Kong Polytechnic Univ. (Hong Kong, China)
The Hong Kong Polytechnic Univ. Shenzhen Research Institute (China)
Ma Jun, The Hong Kong Polytechnic Univ. (Hong Kong, China)
The Hong Kong Polytechnic Univ. Shenzhen Research Institute (Hong Kong, China)
Ho Hoi Lut, The Hong Kong Polytechnic Univ. (Hong Kong, China)
The Hong Kong Polytechnic Univ.Shenzhen Research Institute (Hong Kong, China)
Jin Wei, The Hong Kong Polytechnic Univ. (Hong Kong, China)
The Hong Kong Polytechnic Univ. Shenzhen Research Institute (China)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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