An Optical Sensor Designed From Cascaded Anti-Resonant Reflection Waveguide and Fiber Ring-Shaped Structure for Simultaneous Measurement of Refractive Index and Temperature

A novel optical fiber sensor based on cascade anti-resonant reflection waveguide (ARRW) and fiber ring-shaped structure (FRSS) is proposed and experimentally demonstrated for simultaneous measurement of refractive index (RI) and temperature. The sensor is very simply fabricated by splicing ARRW and...

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Bibliographic Details
Published in:IEEE photonics journal 2022-02, Vol.14 (1), p.1-6
Main Authors: Zheng, Jiewen, Liu, Bo, Zhao, Lilong, Ullah, Rahat, Mao, Yaya, Ren, Jianxin, Wang, Tutao
Format: Article
Language:English
Subjects:
Anti-resonant reflection waveguide
Bending
fiber ring-shaped structure
Interference
Optical fiber sensors
Optical fibers
Optical measuring instruments
Refractivity
RI measurement
Sensitivity
Sensors
Splicing
Temperature measurement
Temperature sensors
Wave reflection
Waveguides
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Summary:A novel optical fiber sensor based on cascade anti-resonant reflection waveguide (ARRW) and fiber ring-shaped structure (FRSS) is proposed and experimentally demonstrated for simultaneous measurement of refractive index (RI) and temperature. The sensor is very simply fabricated by splicing ARRW and FRSS based on Mach-Zehnder interference (MZI). The FRSS interference dip is sensitive to external RI and temperature changes, whereas the ARRW structure's loss dip is only sensitive to external temperature. As a result, this sensor can be used to measure both RI and temperature simultaneously. The sensor's maximum RI sensitivity is 108.61 nm/RIU and its maximum temperature sensitivity is 19 pm/ °C in the experiment. This sensor is a good choice when it is necessary to measure RI and temperature at the same time due to its compact size, high sensitivity, low cost, and good stability.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2022.3144156