A Fiber Bragg Grating Temperature Sensor for 2-400 K

Journal Article · Sun Mar 01 00:00:00 EST 2015 · IEEE Sensors Journal

DOI:https://doi.org/10.1109/JSEN.2014.2368457· OSTI ID:1211626

Zaynetdinov, Madrakhim; See, Erich M.; Geist, Brian ; Ciovati, Gianluigi; Robinson, Hans D.; Kochergin, Vladimir

We demonstrate fiber optic, multiplexible temperature sensing using a fiber Bragg grating (FBG) with an operational range of 2-400 K, and a temperature resolution better than 10 mK for temperatures < 12 K. This represents a significant reduction in the lowest usable temperature as well as a significant increase in sensitivity at cryogenic temperatures compared with previously reported multiplexible solutions. This is accomplished by mounting the section of the fiber with a FBG on a polytetrafluoroethylene coupon, which has a non-negligible coefficient of thermal expansion down to < 4 K. The sensors exhibit a good stability over multiple temperature cycles and acceptable sensor-to-sensor repeatability. Possible applications for this sensor include distributed temperature sensing across superconducting elements and cryogenic temperature measurements in environments where electrical measurements are impractical or unsafe.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: SC0001964
• OSTI ID: 1211626
• Report Number(s): JLAB-ACC-15-1946; DOE/OR/23177-3470
• Journal Information: IEEE Sensors Journal, Vol. 15, Issue 3; ISSN 1530-437X
• Country of Publication: United States
• Language: English