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Proceedings Paper

Optical methane detection sensor using an interferometric-structured optical planar waveguide
Author(s): Myoung Jin Kim; Sung Hwan Hwang; Woo-Jin Lee; Eun Joo Jung; Byung Sup Rho
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Paper Abstract

We present and optical methane sensor that employs a Mach-Zehnder interferometer formed on a planar waveguide. The overclad of only one arm of interferometer is partially etched up to the boundary between the core and clad. Then, the etched region is coated by SnO2 thin layer and the sensor module is annealed at high temperature. When the fabricated sensor module is exposed to methane gas, the interferogram is changed and quickly saturated in 10 seconds.

Paper Details

Date Published: 31 January 2012
PDF: 4 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83510Z (31 January 2012); doi: 10.1117/12.915928
Show Author Affiliations
Myoung Jin Kim, Korea Photonics Technology Institute (Korea, Republic of)
Sung Hwan Hwang, Korea Photonics Technology Institute (Korea, Republic of)
Woo-Jin Lee, Korea Photonics Technology Institute (Korea, Republic of)
Eun Joo Jung, Korea Photonics Technology Institute (Korea, Republic of)
Byung Sup Rho, Korea Photonics Technology Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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