Novel optical fiber temperature and humidity sensor

• Main Authors: LIU YUAN, HOU MOYU, WANG JIQIANG, LI ZHEN, ZHANG ZHIQIANG, LIU TONGYU, DONG GUOFENG, ZHAO LIN
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2020
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

The invention provides a novel optical fiber temperature and humidity sensor. The novel optical fiber temperature and humidity sensor comprises a single-mode optical fiber bundle, an optical fiber bundle fixing groove, an optical fiber bundle packaging shell, a sensor front end connector and a sensor tail fiber structural part, wherein the single-mode optical fiber bundle is composed of a plurality of optical fiber grating sets, each optical fiber grating set comprises a humidity grating, a temperature grating and a single-mode optical fiber which are connected in sequence, and the surface ofeach humidity grating is coated with a humidity-sensitive material; the single-mode optical fiber bundle is fixed in the optical fiber bundle fixing groove and then is placed in the optical fiber bundle packaging shell, and the sensor front end connector is connected with the inner threads of the optical fiber bundle packaging shell; the other end of the optical fiber bundle packaging shell is connected with the front-end