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Temperature-Compensated Multifunctional All-Fiber Sensors for Precise Strain/High-Pressure Measurement

We propose two types of temperature-compensated all-fiber sensors based on a novel laser-machined Fabry-Perot interferometer (FPI) whose sensitivity is adjusted by controlling the FPI gauge length and fiber material. The sensors are demonstrated to achieve precise multiparameter measurements under high temperatures. One sensor is an enhanced sensitivity FPI cascaded with a femtosecond laser inscribed fiber Bragg grating. We propose a modified calculation formula considering the temperature dependence of strain/pressure sensitivities to ensure measurement accuracies. The experiment shows that the cascaded sensor exhibits excellent sensing performance with the maximum strain and pressure sensitivities of 41.6 pm/με and -222 pm/MPa, respectively, and in a stable environment, its strain-temperature and pressure- temperature crosstalk are 0.139 με/°C and 0.027 MPa/°C, respectively. The other sensor is the FPI itself with a length-matched gutter. It achieves an ultralow average thermal drift of 0.1 pm/°C over 16-400 °C. Experimental results show that it exhibits low temperature-pressure and temperature-strain cross sensitivities of -0.0017 MPa/°C and 0.015 με/°C, respectively.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.37 No.18 September 15 2019

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 4634 - 4642

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

-

Edisi

-

Subjek

FEMTOSECOND LASER
FBG
FPI
HIGH TEMPERATURE AND HIGH-PRESSURE
LASER MICROMACHINING
TEMPERATURE-INSENSITIVE

Info Detail Spesifik

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Pernyataan Tanggungjawab

Tingting Yang, Zengling Ran, Xiu He, Zhuoyue Li, Zhendong Xie, Yaxin Wang, Yunjiang Rao, Xueguang Qiao, Zhengxi He, Peng He, Yanguang Yang, Fu Min

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