公开(公告)号：US20220349713A1

公开(公告)日：2022-11-03

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

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.

公开(公告)号：US20220026297A1

公开(公告)日：2022-01-27

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

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 means of 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.