公开(公告)号：US12044591B2

公开(公告)日：2024-07-23

申请号：US17259847

申请日：2020-08-26

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Zhenguo Jing ,  Wei Peng ,  Yueying Liu ,  Qiang Liu ,  Ang Li

IPC: G01L9/00 ,  G02B6/255

CPC classification number: G01L9/0077 ,  G02B6/2551 ,  G02B6/2552

Abstract: A miniature diaphragm-based fiber-optic tip FP pressure sensor, and fabrication method and application thereof. A miniature diaphragm-based fiber-optic tip FP pressure sensor includes an optical fiber, a hollow-core optical fiber, and a pressure sensing diaphragm, wherein the optical fiber and the hollow-core optical fiber have the same diameter, the two are spliced by arc welding; and the pressure sensing diaphragm is bonded to the endface of the hollow-core optical fiber by hydroxide catalysis bonding. The FP pressure sensor can not only realize the all-silica structure of a sensor, but also make the joint of each component free of organic polymer, and has extremely high long-term stability and thermal stability. Meanwhile, by a fabrication method of the miniature diaphragm-based fiber-optic tip FP pressure sensor, the application range and service life of the sensor are increased, and fabrication costs are reduced.

公开(公告)号：US11692827B2

公开(公告)日：2023-07-04

申请号：US17626299

申请日：2021-07-28

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Zhenguo Jing ,  Wei Peng ,  Ang Li ,  Yueying Liu ,  Qiang Liu ,  Zhiyuan Huang ,  Yang Zhang

IPC: G01C19/72 ,  G01B9/0209

CPC classification number: G01C19/721 ,  G01B9/0209 ,  G01C19/722

Abstract: A white light interferometric fiber-optic gyroscope based on a rhombic optical path difference bias structure includes a laser, a rhombic optical path difference bias structure, a fiber coil and a photodetector. The white light interferometric fiber-optic gyroscope adopts an all-fiber structure to simplify the complexity of a gyroscope system and reduce the overall cost. A white light interferometric demodulation algorithm is used to realize linear output of rotation rate signals.