Temperature field measurement based on the Chirped Fiber Bragg Grating

Zhang, Yueming; Wang, Wenwen; Huang, Zhenlin; Liu, Yang; Ren, Ziqiao; Wu, Jun; Wang, Fuxiang; Shen, Changyu

doi:10.1109/icocn55511.2022.9901134

Cited by 1 publication

(2 citation statements)

References 13 publications

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“…It could couple the forward transmission waveguide mode to the backward transmission waveguide mode and its basic structure is similar to that of a reflective fiber. 15 The effective refractive index of the CFBG core could be expressed as 16…”

Section: Cfbg Sensing Principlementioning

confidence: 99%

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Real-time in-situ measurement method of marine sliding bearing wear based on chirped fiber Bragg grating

Liu,

Zhang,

Jing

et al. 2023

Opt. Eng.

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Marine sliding bearings re prone to wear in harsh environments. A real-time in-situ measurement method of sliding bearing wear, based on chirped fiber Bragg grating (CFBG), was proposed. The CFBG wear detection sensor and the corresponding demodulation system were designed and fabricated. The CFBG was sealed to ensure that wear synchronously with the sliding bearing. The relationship between the bandwidth and length of the CFBG was established and adopted to calculate the wear length. Meanwhile, a Savitzky-Golay filter was applied to denoising to improve the accuracy of the demodulation system. Experimental results showed that the sensor could achieve high precision real-time bearing detection and fault warning. With a chirp rate of 10 nm∕cm and a bandwidth resolution of 20 pm, a wear range >8 mm and an accuracy of 0.3 mm could be obtained.

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Section: Cfbg Sensing Principlementioning

confidence: 99%

“…The periodic variation of refractive index is used by CFBG to reflect the incident light that satisfies the Bragg condition. It could couple the forward transmission waveguide mode to the backward transmission waveguide mode and its basic structure is similar to that of a reflective fiber 15 …”

Section: Principlementioning

confidence: 99%