1 December 1990 High-temperature sensing applications of silica and sapphire optical fibers
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Proceedings Volume 1370, Fiber Optic Smart Structures and Skins III; (1990) https://doi.org/10.1117/12.24857
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States
Abstract
Two silica fiber strain sensors are presented and their capabilities at high temperatures are demonstrated. A silica fiber extrinsic Fabry-Perot strain sensor is demonstrated with nanometer resolution at temperatures up to 975 C. The second silica-based fiber sensor is an intensity-based strain sensor constructed by placing two multimode fibers inside a hollow silica tube. As the gap between the endfaces of the fibers changes, the intensity of the output optical power varies depending on the longitudinal misalignment. SiO2 was deposited using a CVD method to form a cladding on commercially-available sapphire rods. The sapphire optical fiber was used to build a displacement sensor.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kent A. Murphy, C. E. Koob, Angela J. Plante, Seshu B. Desu, Richard O. Claus, "High-temperature sensing applications of silica and sapphire optical fibers", Proc. SPIE 1370, Fiber Optic Smart Structures and Skins III, (1 December 1990); doi: 10.1117/12.24857; https://doi.org/10.1117/12.24857
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