Graphene-based microfiber gas sensor

Bai-Cheng Yao; Yu Wu; Yang Chen; Xiu-Ping Liu; Yuan Gong; Yun-Jiang Rao

doi:10.1117/12.2013416

26 October 2012 Graphene-based microfiber gas sensor

Bai-Cheng Yao, Yu Wu, Yang Chen, Xiu-Ping Liu, Yuan Gong, Yun-Jiang Rao

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421CD (2012) https://doi.org/10.1117/12.2013416
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

In this paper, a novel graphene-based microfiber sensor is proposed and demonstrated for detection of gas concentration for the first time. As the complex refractive index (CRI) of graphene can be modulated by gas molecules in the surrounding environment, the propagating light along the graphene layer coupled by the microfiber would be altered to induce the attenuation of polarization mode intensity. Based on such a unique TE-polarization mode attenuation feature of graphene, experimental results showed that the acetone concentration can be measured accurately and quickly. Such an approach could open a window for realization of a variety of highly sensitive and fast gas or liquid sensors based on graphene, for wide applications in biological, medical and chemical fields.

Citation Download Citation

Bai-Cheng Yao, Yu Wu, Yang Chen, Xiu-Ping Liu, Yuan Gong, and Yun-Jiang Rao "Graphene-based microfiber gas sensor", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421CD (26 October 2012); https://doi.org/10.1117/12.2013416

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