Title :
High-sensitivity temperature sensor using a side-polished single-mode fiber covered with the polymer planar waveguide
Author :
Jung, Woong-Gyu ; Kim, Sang-Woo ; Kim, Kwang-Taek ; Kim, Eung-Soo ; Kang, Shin-Won
Author_Institution :
Dept. of Sensor Eng., Kyungpook Nat. Univ., Yaegu, South Korea
Abstract :
A temperature sensor based on evanescent field coupling between a single-mode side-polished fiber and a polymer planar waveguide was demonstrated. Due to thermooptic effects of a polymer planar waveguide, the resonance wavelength of the device is very sensitive to ambient temperature. Two kinds of polymers were used as planar waveguide materials. Fabricated sensors have a sensitivity of -0.37 nm//spl deg/C and -0.71 nm//spl deg/C, respectively. We also measured the thermooptic coefficient of employed polymer approximately.
Keywords :
fibre optic sensors; optical fibre cladding; optical planar waveguides; polishing; polymer films; sensitivity; temperature sensors; thermo-optical effects; ambient temperature; evanescent field coupling; high-sensitivity temperature sensor; polymer planar waveguide; resonance wavelength; sensitivity; side-polished single-mode fiber; thermo optical effects; thermooptic coefficient; thermooptic effects; Optical fiber couplers; Optical fiber polarization; Optical fiber sensors; Optical fibers; Optical refraction; Optical waveguides; Planar waveguides; Polymers; Tellurium; Temperature sensors;
Journal_Title :
Photonics Technology Letters, IEEE
