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Proceedings Paper

A fiber-tip Fabry-Perot pressure sensor with graphene diaphragm
Author(s): Jun Ma; Wei Jin; Hoi Lut Ho
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Paper Abstract

A miniature fiber-tip pressure sensor was built by using an extremely thin graphene film as the diaphragm. The graphene also acts as a light reflector which, in conjunction with reflection at the fiber end/air interface, forms a low fineness Fabry-Perot cavity. The graphene-based micro-cavity sensor demonstrated a pressure sensitivity of ~34.8 nm/kPa with a diaphragm diameter of ~ 25 μm, nearly two orders of magnitude higher than previously reported sensors with similar diaphragm diameters.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211C (17 October 2012); doi: 10.1117/12.975124
Show Author Affiliations
Jun Ma, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Wei Jin, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Hoi Lut Ho, The Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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