Near-infrared absorption fiber-optic sensors for ultra-sensitive CO2 detection

Xinyuan Chong; Ki-Joong Kim; Paul R. Ohodnicki; Chih-Hung Chang; Alan X. Wang

doi:10.1117/12.2178072

13 May 2015 Near-infrared absorption fiber-optic sensors for ultra-sensitive CO₂ detection

Xinyuan Chong, Ki-Joong Kim, Paul R. Ohodnicki, Chih-Hung Chang, Alan X. Wang

Proceedings Volume 9480, Fiber Optic Sensors and Applications XII; 94800W (2015) https://doi.org/10.1117/12.2178072
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

We present a fiber-optic sensor working at near-infrared (NIR) wavelength (~1.57μm) for CO₂ detection. In order to increase the NIR absorption, we utilize functional sensor materials metalorganic framework (MOF) on the surface of the core of a multimode-fiber with the cladding layer etched away. The selected functional materials demonstrated excellent adsorption capacity of CO₂ and significantly increased the detection sensitivity down to 500 ppm with only 8-centimeter absorption length.

Citation Download Citation

Xinyuan Chong, Ki-Joong Kim, Paul R. Ohodnicki, Chih-Hung Chang, and Alan X. Wang "Near-infrared absorption fiber-optic sensors for ultra-sensitive CO₂ detection", Proc. SPIE 9480, Fiber Optic Sensors and Applications XII, 94800W (13 May 2015); https://doi.org/10.1117/12.2178072

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