Simultaneous measurement of temperature and humidity based on spherical structure optical fiber interferometer

• 作者: LI Jia-xin QIN Juan TONG Zheng-rong ZHANG Wei-hua ZHAO Xu-dong
• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2020,（4）
• 所属期刊栏目: Devices
• 页码范围: 256-261
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11801-020-9144-8

摘要

A Mach-Zehnder interferometer (MZI) based on two spherical structures is proposed and temperature and humidity are measured simultaneously.The device is fabricated by inserting two spherical structures into a single mode optical fiber (SMF).The results of the experiment indicate that the temperature sensitivities are 0.079 nm/℃ and 0.090 nm/℃ from 10 ℃ to 60 ℃,respectively.When the humidity changes from 30％ to 70％,the humidity sensitivities are 0.148 nrm/％RH and 0.06 rnm/％RH,respectively.Therefore,temperature and humidity are measured simultaneously by the sensitive matrix.The new structure is demonstrated to be a particularly useful approach to detect temperature and humidity.