HIGH-SENSITIVITY AIR PRESSURE SENSOR BASED ON SUSPENDED-CORE OPTICAL FIBER AND SIDE-HOLE OPTICAL FIBER

WIPO Patent Application WO/2022/156298

A1

A high-sensitivity air pressure sensor based on a suspended-core optical fiber and a side-hole optical fiber, comprising a broadband light source, an optical fiber circulator, a sensing head, and a spectrometer; the optical fiber circulator is connected to the broadband light source, the sensing head, and the spectrometer; the sensing head comprises a single-mode optical fiber, a multi-mode optical fiber, a suspended-core optical fiber, and a side-hole optical fiber; the single-mode optical fiber is connected to the suspended-core optical fiber by means of the multi-mode optical fiber; the multi-mode optical fiber is connected to the side-hole optical fiber by means of the suspended-core optical fiber. By means of optical fiber fusion, the sensor is easy to prepare; the sensor has a small volume and a compact structure and is convenient to use; no adhesive is required, and the sensor has good stability; a vernier effect can be achieved by means of parallel connection of two chambers, good interference spectrum contrast is provided, and high sensitivity is achieved.

WANG JI (CN)
YANG YUQIANG (CN)
LIU MINGXIN (CN)

PCT/CN2021/126881

July 28, 2022

October 28, 2021

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UNIV GUANGDONG OCEAN (CN)

G01L11/02

CN112924082A	2021-06-08
CN211824859U	2020-10-30
CN109186849A	2019-01-11
CN210180567U	2020-03-24
CN111678540A	2020-09-18
CN108225657A	2018-06-29
US6448551B1	2002-09-10
US20040165809A1	2004-08-26
CN1269881A	2000-10-11

BEIJING SHENGXUN IP AGENT LLC (CN)

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