Research on a 260 degree C distributed optical fiber temperature sensor and its optimization design

Hongzhi Zhao; Naiji Li; Dazun Zhao

doi:10.1117/12.263498

10 January 1997 260 degree C distributed optical fiber temperature sensor and its optimization design

Hongzhi Zhao, Naiji Li, Dazun Zhao

Proceedings Volume 3000, Laser Diode and LED Applications III; (1997) https://doi.org/10.1117/12.263498
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

The paper presents theoretical and experimental investigations on distributed anti-Stokes ratio thermometry (DART) sensing for monitoring temperature in complicated structure. A technique, based on maximizing signal to noise ratio (SNR) of DART, has been proposed. A preliminary prototype DART system based on a microcomputer has been developed and optimized by this technique. It has spatial resolution of 15.6 m (limited by pulse width of the laser), measuring time of 160 s, temperature resolution of 7 degrees Celsius, sensing upper limit of 260 degrees Celsius, and sensing distance of 1.5 km.

Citation Download Citation

Hongzhi Zhao, Naiji Li, and Dazun Zhao "260 degree C distributed optical fiber temperature sensor and its optimization design", Proc. SPIE 3000, Laser Diode and LED Applications III, (10 January 1997); https://doi.org/10.1117/12.263498

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