Abstract

Distributed temperature sensing up to 600°C at a fiber length of 100.75 m based on optical frequency domain reflectometry (OFDR) was demonstrated using a standard single-mode fiber (SMF) without any treatment. The spatial resolution was 2.5 mm. An algorithm, instantaneous optical frequency resampling (IOFR), to eliminate the nonlinearity of the laser source was proposed and used to obtain calibrated reference and measurement signals that were used for temperature demodulation. Moreover, the temperature response stability of the annealed SMF was better than that of un-annealed SMF, where the temperature sensitivity was 1.96 GHz/°C at 600°C.

© 2022 Optica Publishing Group

Multiple optical fiber sensing with a single data channel of optical frequency-domain reflectometry

Tuo Lv, Ruming Wei, Da-Peng Zhou, Wei Peng, Liang Chen, and Xiaoyi Bao
Opt. Lett. 47(16) 4068-4071 (2022)

Distributed pH sensing based on hydrogel coated single mode fibers and optical frequency domain reflectometry

Guolu Yin, Hu Xiao, Hang Zhou, and Tao Zhu
Opt. Express 30(24) 42801-42809 (2022)

Vectorial distributed acoustic sensing based on a multicore fiber and phase-sensitive optical time-domain reflectometry

Xunzhou Xiao, Jun He, Bin Du, Xizhen Xu, and Yiping Wang
Opt. Lett. 47(20) 5413-5416 (2022)

Temperature-compensated distributed refractive index sensor based on an etched multi-core fiber in optical frequency domain reflectometry

Zongda Zhu, Dexin Ba, Lu Liu, Liqiang Qiu, and Yongkang Dong
Opt. Lett. 46(17) 4308-4311 (2021)

Distributed refractive index sensing based on tapered fibers in optical frequency domain reflectometry

Zhenyang Ding, Keliang Sun, Kun Liu, Junfeng Jiang, Di Yang, Zhe Yu, Jing Li, and Tiegen Liu
Opt. Express 26(10) 13042-13054 (2018)