Polarimetric fibre laser sensors using Er-doped fibre |
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| Authors: | H K Kim S K Kim B Y Kim |
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| Institution: | (1) Optical Transmissions Section, Electronics and Telecommunications Research Institute, P. O. Box 106, Taejon, Korea;(2) Department of Physics, Korea Advanced Institute of Science and Technology, 373-1, Kusong-dong, Yusong-gu, Taejon, Korea |
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| Abstract: | A polarimetric fibre laser sensor with narrow polarization mode beat frequency bandwidth is demonstrated using a polarization-maintaining Er-doped fibre. The slope coefficients of 124kHz°C-1 cm-1 and 137kHz  m-1 are obtained for temperature change and longitudinal strain measurements, respectively. A new configuration of polarimetric fibre laser sensor is also demonstrated using a conventional Er-doped fibre as a gain medium and a short length of polarization-maintaining fibre as a sensing part. |
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