Highly sensitive refractive index sensor with fiber in-line Fabry-Perot interferometers based on vernier effect
- Resource Type
- Conference
- Authors
- Zhao, F. P.; Xu, Ben; Wang, D. N.; Zhang, Y. X.; Yang, J. W.
- Source
- 2019 18th International Conference on Optical Communications and Networks (ICOCN) Optical Communications and Networks (ICOCN), 2019 18th International Conference on. :1-3 Aug, 2019
- Subject
- Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Power, Energy and Industry Applications
Signal Processing and Analysis
Optical fiber sensors
Optical fibers
Liquids
Temperature sensors
Sensitivity
Refractive index
Temperature measurement
Optical fiber refractive index sensor
Fabry-Perot interferometer
vernier effect
- Language
A highly sensitive refractive index (RI) sensor with fiber in-line Fabry-Perot interferometers based on vernier effect is proposed and experimentally demonstrated. The sensor is fabricated by splicing a short segment of capillary to a commercial single mode fiber (SMF) and then splicing a tiny large mode area fiber to the capillary. There are two micro-channels in the lateral wall of the tube. The sensor exhibits a compact size of less than 1 mm in total length and has the highest RI sensitivity of ~10189.2 nm/RIU within the range of 1.32846 to 1.33327.