Title:
FABRY-PEROT INTERFERENCE OPTICAL FIBER PRESSURE SENSOR FOR ELIMINATING TEMPERATURE INTERFERENCE, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/103373
Kind Code:
A1
Abstract:
A Fabry-Perot interference optical fiber pressure sensor for eliminating temperature interference. The sensor comprises an incident optical fiber, an optical fiber collimating sleeve (4) and a reflective quartz optical fiber (3), wherein the incident optical fiber and the reflective quartz optical fiber (3) are located in the optical fiber collimating sleeve (4); the incident optical fiber and the reflective quartz optical fiber (3) do not come in contact with each other, and form a first Fabry-Perot interference cavity; the incident optical fiber comprises an incident quartz optical fiber (1) and an N,O-carboxymethyl chitosan optical fiber (2); and the N,O-carboxymethyl chitosan optical fiber (2) comprises a fourth end face (13) and a fifth end face (14), and the fourth end face (13) and the fifth end face (14) form a second Fabry-Perot interference cavity. Two completely independent Fabry-Perot interference cavities are formed, the first Fabry-Perot interference cavity is used for detecting a pressure change, and the second Fabry-Perot interference cavity is used for detecting a temperature change, such that the influence of ambient temperature is eliminated during the measurement of the optical fiber pressure sensor. The manufacturing process is simple, environmentally friendly and convenient; and the sensor is safe and reliable, and has good stability. Further provided is a method for manufacturing a Fabry-Perot interference optical fiber pressure sensor for eliminating temperature interference.
Inventors:
WANG WENHUA (CN)
WU WEINA (CN)
LI LEFAN (CN)
LI SIDONG (CN)
SHI WENQING (CN)
XIONG ZHENGYE (CN)
XIE YUPING (CN)
LUO YUANZHENG (CN)
HUANG JIANG (CN)
HE QILANG (CN)
WU WEINA (CN)
LI LEFAN (CN)
LI SIDONG (CN)
SHI WENQING (CN)
XIONG ZHENGYE (CN)
XIE YUPING (CN)
LUO YUANZHENG (CN)
HUANG JIANG (CN)
HE QILANG (CN)
Application Number:
PCT/CN2022/104645
Publication Date:
June 15, 2023
Filing Date:
July 08, 2022
Export Citation:
Assignee:
UNIV GUANGDONG OCEAN (CN)
International Classes:
G02B6/25; G01L11/02; G01L19/00; G01L19/04
Foreign References:
| CN102384809A | 2012-03-21 | |||
| CN102879136A | 2013-01-16 | |||
| CN112629744A | 2021-04-09 | |||
| US20200200624A1 | 2020-06-25 | |||
| US20100245840A1 | 2010-09-30 | |||
| CN113375844A | 2021-09-10 | |||
| CN113916438A | 2022-01-11 |
Attorney, Agent or Firm:
BEIJING ZHUOSHENG BAIDA IP AGENT LTD. (CN)
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