Title :
Evaluation of Brillouin scattering properties in plastic optical fibers for wide-range temperature sensing
Author :
Minakawa, K. ; Hayashi, Neisei ; Shinohara, Yui ; Tahara, Mitsuru ; Hosoda, H. ; Mizuno, Yosuke ; Nakamura, Kentaro
Author_Institution :
Precision & Intell. Lab., Tokyo Inst. of Technol., Yokohama, Japan
Abstract :
We investigate the temperature dependence of Brillouin scattering properties in perfluorinated graded-index (PFGI-) plastic optical fibers (POFs) in a wide temperature range from -170 to 130°C. The temperature dependence of Brillouin frequency shift is found to be nonlinear at > 84°C; while it shows linear dependences even at -170°C. The Stokes power is maximal at ~60 °C and is gradually reduced with decreasing or increasing temperature. Our results indicate that the Brillouin scattering in PFGI-POFs can be exploited to cryogenic-temperature sensing as well as higher-temperature sensing.
Keywords :
cryogenics; fibre optic sensors; gradient index optics; optical polymers; plastics; stimulated Brillouin scattering; temperature sensors; thermo-optical devices; thermo-optical effects; Brillouin frequency shift; Brillouin scattering properties; PFGI-POF; Stokes power; cryogenic-temperature sensing; higher-temperature sensing; nonlinear dependences; perfluorinated graded-index-plastic optical fibers; temperature -170 degC to 130 degC; temperature dependence; wide-range temperature sensing; Brillouin scattering; Strain; Temperature; Temperature dependence; Temperature measurement; Temperature sensors;
Conference_Titel :
Microoptics Conference (MOC), 2013 18th
Conference_Location :
Tokyo
