High Temperature Accurate Monitoring Based on Phase-Shifting Grating and Photoelectric Oscillation
- 15 September 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 33 (21), 1169-1172
- https://doi.org/10.1109/lpt.2021.3112569
Abstract
A high temperature real-time accurate monitoring system based on photoelectric oscillation had been proposed and demonstrated. We use the narrow bandwidth characteristics of phase-shifting fiber Bragg grating (PS-FBG) to generate stable photoelectric oscillation signals. After the PS-FBG is ceramic packaged to adapt to and apply to 500 °C high temperature, the wavelength shift caused by temperature change is precisely responded by narrow linewidth PS-FBG, so the change of photoelectric oscillation signal can be monitored in real time with high precision. The experimental results show that the sensitivity is -1.24 GHz/°C and the linearity is -0.99953. The system has a resolution of 0.0083 °C. The test system has excellent potential application value in precise control of high temperature environment such as metal smelting, crystal growth, chemistry and pharmaceutical engineering.Keywords
Funding Information
- National Natural Science Foundation of China (61675064, 61765010)
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