Laser & Optoelectronics Progress, Volume. 53, Issue 8, 80604(2016)
High Precision Temperature Measurement Based on π-Phase-Shifted Fiber Bragg Grating
The photothermal effect can induce the frequency fluctuations of π-phase-shifted fiber Bragg grating (PSFBG), so the incident laser is attenuated to the single photon level in order to eliminate the photothermal effect. The intensity of the incident single photon is modulated, and then the transistor-transistor logics (TTL) signal pulses of photoelectric conversion are directly demodulated with the lock-in amplifier. Thereby the environmental temperature is measured by using the PSFBG. The precision for temperature measurement is up to 0.14 ℃.
Get Citation
Copy Citation Text
Yu Bo, Jing Mingyong, Hu Jianyong, Zhang Guofeng, Xiao Liantuan, Jia Suotang. High Precision Temperature Measurement Based on π-Phase-Shifted Fiber Bragg Grating[J]. Laser & Optoelectronics Progress, 2016, 53(8): 80604
Category: Fiber Optics and Optical Communications
Received: Apr. 12, 2016
Accepted: --
Published Online: Aug. 11, 2016
The Author Email: Bo Yu (yubo6688@126.com)