High resolution temperature mapping of gas turbine combustor simulator exhaust with femtosecond laser induced fiber Bragg gratings

Robert B. Walker; Sangsig Yun; Huimin Ding; Michel Charbonneau; David Coulas; Ping Lu; Stephen J. Mihailov; Nanthan Ramachandran

doi:10.1117/12.2265829

23 April 2017 High resolution temperature mapping of gas turbine combustor simulator exhaust with femtosecond laser induced fiber Bragg gratings

Robert B. Walker, Sangsig Yun, Huimin Ding, Michel Charbonneau, David Coulas, Ping Lu, Stephen J. Mihailov, Nanthan Ramachandran

Author Affiliations +

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103238O (2017) https://doi.org/10.1117/12.2265829
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

Femtosecond infrared (fs-IR) laser written fiber Bragg gratings (FBGs), have demonstrated great potential for extreme sensing. Such conditions are inherent in advanced gas turbine engines under development to reduce greenhouse gas emissions; and the ability to measure temperature gradients in these harsh environments is currently limited by the lack of sensors and controls capable of withstanding the high temperature, pressure and corrosive conditions present. This paper discusses fabrication and deployment of several fs-IR written FBG arrays, for monitoring exhaust temperature gradients of a gas turbine combustor simulator. Results include: contour plots of measured temperature gradients, contrast with thermocouple data.

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Robert B. Walker, Sangsig Yun, Huimin Ding, Michel Charbonneau, David Coulas, Ping Lu, Stephen J. Mihailov, and Nanthan Ramachandran "High resolution temperature mapping of gas turbine combustor simulator exhaust with femtosecond laser induced fiber Bragg gratings", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103238O (23 April 2017); https://doi.org/10.1117/12.2265829

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