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A compact temperature sensor based on a broadband microfiber coupler tip is demonstrated. The thermometer dynamic range spans from room temperature to 1511 with a response time of tens of milliseconds. This is the highest temperature measured with a silica optical fiber device. A resolution of 0.66 was achieved for a coupler tip diameter of . Better resolution can be achieved with smaller sized microfiber coupler tips.
Ding, M., Wang, P., & Brambilla, G. (2012) Fast-Response High-Temperature Microfiber Coupler Tip Thermometer. Photonics Technology Letters, IEEE , vol.24, no.14, pp.1209,1211, 15 July. doi:10.1109/LPT.2012.2200673