Title :
Ultra-Sensitive Strain and Temperature Sensing Based on Modal Interference in Perfluorinated Polymer Optical Fibers
Author :
Numata, Goki ; Hayashi, Neisei ; Tabaru, Marie ; Mizuno, Yosuke ; Nakamura, Kentaro
Author_Institution :
Precision & Intell. Lab., Tokyo Inst. of Technol., Yokohama, Japan
Abstract :
We implement the strain and temperature sensors based on multimode interference in perfluorinated (PF) graded-index (GI) plastic optical fibers, and investigate their sensing performance at 1300 nm. We obtain strain and temperature sensitivities of -112 pm/με/m and +49.8 nm/°C/m, the absolute value of which are 12.9 and over 1800 times as large as those in silica GI multimode fibers, respectively. These ultra-high strain and temperature sensitivities probably originate from the unique core material, i.e., PF polymer.
Keywords :
fibre optic sensors; gradient index optics; light interference; optical polymers; strain sensors; temperature sensors; modal interference; multimode interference; perfluorinated graded-index plastic optical fibers; perfluorinated polymer optical fibers; strain sensitivities; temperature sensing; temperature sensitivities; ultra-sensitive strain sensing; wavelength 1300 nm; Optical fibers; Sensitivity; Silicon compounds; Strain; Temperature dependence; Temperature measurement; Temperature sensors; Polymer optical fibers; modal interference; perfluorinated polymer; strain sensing; temperature sensing;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2014.2352637
