DocumentCode :
11252
Title :
High Performance Temperature Sensing of Single Mode-Multimode-Single Mode Fiber With Thermo-Optic Polymer as Cladding of Multimode Fiber Segment
Author :
Yujuan Zhang ; Linlin Xue ; Tongxin Wang ; Li Yang ; Bing Zhu ; Qijin Zhang
Author_Institution :
Dept. of Polymer Sci. & Eng., Univ. of Sci. & Technol. of China, Hefei, China
Volume :
14
Issue :
4
fYear :
2014
fDate :
Apr-14
Firstpage :
1143
Lastpage :
1147
Abstract :
We present a fiber sensing for temperature with two different mode interferences. The sensor consists of a single mode-multimode-single mode (SMS) fiber with a specifically designed and synthesized thermo-optic polymer cladding, forming a leaky mode fiber interferometer and a guided one at different temperatures. A maximum temperature sensitivity of 1.4 dB/°C below 61°C and of 15 nm/°C above 72°C have been achieved. The high temperature sensitivity is mainly attributed to the high thermo-optic coefficient of the polymer cladding. The phenomenon of the fiber temperature sensing around the transformation point can be observed and studied using the proposed fiber sample. It is found that the SMS fiber sensor is more sensitive to temperature for both of the mode interferences when the refractive index (RI) of the polymer is closer to that of the multimode fiber core, and the measurement range is relatively wide.
Keywords :
fibre optic sensors; optical fibre cladding; optical polymers; refractive index; temperature sensors; thermo-optical effects; high performance temperature sensing; leaky mode fiber interferometer; multimode fiber segment cladding; refractive index; single mode-multimode-single mode fiber; temperature sensitivity; thermo-optic coefficient; thermo-optic polymer cladding; Optical fiber sensors; Optical fibers; Polymers; Sensitivity; Temperature measurement; Temperature sensors; SMS fiber; polymer; temperature sensing;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2013.2293536
Filename :
6678700
Link To Document :
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