Dual-mode demodulation of hybrid fiber-optic sensor cascaded ring-shape microfiber interferometer with TFBG for simultaneous monitoring of pressure and temperature

2026-05-04

PRE

Binglin Li

Hanlin Liu

Xintong Li

Miao Liu

Lihao Zhang

Hongxing Ke

Keyao Hao

Peng Chen

Yongming Fu

Zejia Zhao

Dandan Sun *

Jie Ma *

DOI：10.1016/j.optlaseng.2026.109846

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Abstract

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• A pressure–temperature hybrid sensor integrating the packaged ring-shape MFI with TFBG. • Wavelength–intensity dual demodulation for simultaneous pressure and temperature measurement. • The matrix-based decoupling method to feature temperature compensation capability. • The compact structure facilitates simple preparation and improved stability.

Keywords:

pressure–temperature hybrid sensor

ring-shape microfiber interferometer

TFBG

wavelength–intensity dual demodulation

matrix-based decoupling

Dual-mode demodulation of hybrid fiber-optic sensor cascaded ring-shape microfiber interferometer with TFBG for simultaneous monitoring of pressure and temperature

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