A fiber-tip Fabry-Perot pressure sensor with graphene diaphragm

Jun Ma; Wei Jin; Hoi Lut Ho

doi:10.1117/12.975124

17 October 2012 A fiber-tip Fabry-Perot pressure sensor with graphene diaphragm

Jun Ma, Wei Jin, Hoi Lut Ho

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84211C (2012) https://doi.org/10.1117/12.975124
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

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.

Citation Download Citation

Jun Ma, Wei Jin, and Hoi Lut Ho "A fiber-tip Fabry-Perot pressure sensor with graphene diaphragm", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211C (17 October 2012); https://doi.org/10.1117/12.975124

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