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

Volume

13

Issue

11

fYear

2001

Firstpage

1209

Lastpage

1211

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.959366

Filename

959366