This paper summarizes our recent research progresses in developing optical fiber harsh environment sensors for various high temperature harsh environment sensing applications such as monitoring of the operating conditions in a coal-fired power plant and in-situ detection of key gas components in coal-derived syngas. The sensors described in this paper include a miniaturized inline fiber Fabry-Perot interferometer (FPI) fabricated by one-step fs laser micromachining, a long period fiber grating (LPFG) and a fiber inline core-cladding mode interferometer (CMMI) fabricated by controlled CO2 laser irradiations. Their operating principles, fabrication methods, and applications for measurement of various physical and chemical parameters in a high temperature and high pressure coexisting harsh environment are presented. © 2010 Copyright SPIE - The International Society for Optical Engineering.
American Society of Mechanical Engineers
KAIST
- Coal-Derived Syngas,
- Coal-Fired Power Plant,
- Core-Cladding Mode Interferometer,
- Fabry-Perot Interferometer,
- Harsh Environment Sensor,
- Long Period Fiber Grating,
- Optical Fiber Sensor
Available at: http://works.bepress.com/hai-lung-tsai/162/