Fiber-optic high-temperature sensing system and its field application

Yizheng Zhu; Fabin Shen; Zhengyu Huang; Kristie L. Cooper; Gary R. Pickrell; Anbo Wang; John McDaniel; Tim Pedro

doi:10.1117/12.732906

5 October 2007 Fiber-optic high-temperature sensing system and its field application

Yizheng Zhu, Fabin Shen, Zhengyu Huang, Kristie L. Cooper, Gary R. Pickrell, Anbo Wang, John McDaniel, Tim Pedro

Proceedings Volume 6757, Sensors for Harsh Environments III; 675704 (2007) https://doi.org/10.1117/12.732906
Event: Optics East, 2007, Boston, MA, United States

Abstract

This paper presents the development of a sapphire-based fiber-optic sensing system for temperature monitoring in harsh environment, including sensor and system design, implementation, laboratory tests and field demonstration. The sensor is built with single-crystal sapphire fiber and sapphire wafer. As the sensing element, the wafer constitutes an extrinsic Fabry-Perot interferometer (EFPI) by its two surfaces. Its optical thickness has significant thermal dependence and provides temperature information through white light interferometry. The sensors were tested to 1600°C with 0.2% full scale accuracy and 0.5°C resolution. They were further demonstrated in industrial environment. A complete sensing system was developed around the sensor for temperature monitoring in a coal gasifier at the Tampa Electric Company's Polk Power Station. It consists of three major components: 1) Sensors and their packaging which were installed in the coal gasifier, 2) Optical interrogation unit for detection and transmission of sensor signal, and 3) Processing and control unit for signal demodulation. The system continuously operated and delivered temperature readings for seven months.

Citation Download Citation

Yizheng Zhu, Fabin Shen, Zhengyu Huang, Kristie L. Cooper, Gary R. Pickrell, Anbo Wang, John McDaniel, and Tim Pedro "Fiber-optic high-temperature sensing system and its field application", Proc. SPIE 6757, Sensors for Harsh Environments III, 675704 (5 October 2007); https://doi.org/10.1117/12.732906

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available