Fast-Response Fiber-Optic FPI Temperature Sensing System Based on Modulated Grating Y-Branch Tunable LaserOA
Fast-Response Fiber-Optic FPI Temperature Sensing System Based on Modulated Grating Y-Branch Tunable Laser
In this paper,a cost-effective and miniaturized instrument is proposed,which is based on a tunable modulated grating Y-branch(MG-Y)laser for rapid temperature measurement using a Fabry-Perot interferometer(FPI)sensor.The FPI sensor with a 1463-μm cavity length is a short segment of a capillary tube sandwiched by two sections of single-mode fibers(SMFs).This system has a broad tunable range(1527 nm-1567 nm)with a wavelength interval of 8 pm and a tuning rate of 100 Hz.Temperature sensing experiments are carried out to investigate the performance of the system by demodulating the absolute cavity length of the FPI sensor using a cross-correlation algorithm.Experimental results show that the sensor can reach the response time as short as 94 ms with the sensitivity of 802 pm/℃.Benefiting from the homemade and integrated essential electrical circuits,the entire system has the small size,low cost,and practical application potential to be used in the harsh environment for rapid temperature measurement.
Yang CHEUNG;Zhenguo JING;Qiang LIU;Ang LI;Yueying LIU;Yihang GUO;Sen ZHANG;Dapeng ZHOU;Wei PENG
School of Physics,Dalian University of Technology,Dalian 116024,ChinaSchool of Computer and Electronic Information/School of Artificial Intelligence,Nanjing Normal University,Nanjing 210023,ChinaSchool of Optoelectronic Engineering and Instrumentation Science,Dalian University of Technology,Dalian 116024,China
MG-Y laserinterrogatorrapid temperature measurementcross-correlation algorithm
《光子传感器（英文版）》 2024 (001)
59-72 / 14
This work was supported by the National Natural Science Foundation of China(Grant No.62271101)and the Fundamental Research Funds for Central Universities(Grant No.DUT21ZD212).
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