Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 39,
  • Issue 12,
  • pp. 3911-3918
  • (2021)

Hybrid Sapphire Dual-Fabry—Perot-Cavities Sensor for High Temperature and Refractive Index Measurement

Not Accessible

Your library or personal account may give you access

Abstract

We presented a hybrid sapphire dual-Fabry—Perot- cavities sensor for high temperature and refractive index measurement. A double-sided polished sapphire solid wafer is connected in series with a double-sided parallel sapphire C-ring and a single-sided polished sapphire mirror to form the hybrid Fabry—Perot interferometer. The double-sided polished sapphire solid wafer acts as the first Fabry—Perot cavity for temperature sensing, and the sapphire hollow C-ring cavity constitutes the second Fabry—Perot cavity for measuring the refractive index of external environment medium. The single-sided polished sapphire mirror serves as the most distal reflector. Heterogeneous fiber splicing between sapphire fiber and multimode silica fiber is realized to achieve long-distance transmission of interference signals. A series of high temperature measurement experiments range of room temperature to 1080 °C in an air environment and refractive index measurement experiments in a liquid environment were carried out. Based on the changing rates of corresponding Fabry—Perot cavity optical path difference against refractive index and temperature, we calculated the sensitivities of the sensor. The refractive index and temperature sensitivities were 2.0659 × 105 nm/RIU in the RI range of 1.3330∼1.3741 and 7.837 nm/ °C at 1080 °C.

PDF Article
More Like This
High-consistency fiber-optic Fabry–Perot sensor based on MEMS for simultaneous temperature and liquid refractive index measurement

Shuang Wang, Wen Wu, Mei Sang, Junfeng Jiang, Kun Liu, Xue Wang, Xun Yu, and Tiegen Liu
Appl. Opt. 59(30) 9353-9358 (2020)

High-accuracy hybrid fiber-optic Fabry-Pérot sensor based on MEMS for simultaneous gas refractive-index and temperature sensing

Xue Wang, Shuang Wang, Junfeng Jiang, Kun Liu, Peng Zhang, Wen Wu, and Tiegen Liu
Opt. Express 27(4) 4204-4215 (2019)

Crystallization-sapphire-derived-fiber-based Fabry–Perot interferometer for refractive index and high-temperature measurement

Penghao Zhang, Li Zhang, Zissimos P. Mourelatos, and Zhongyu Wang
Appl. Opt. 57(30) 9016-9021 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved