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Author Jin-Maun Ho ♦ Shiu, M.T.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1993
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Optical fibers ♦ Temperature sensors ♦ Aluminum ♦ Optical fiber sensors ♦ Optical sensors ♦ Fiber lasers ♦ Wounds ♦ Electronic circuits ♦ Phase detection ♦ Laboratories
Abstract The method of using aluminum tube wound by single-mode fiber as a temperature sensor is proposed. The optical source of this temperature sensing system is a 2-frequency He-Ne laser. When the temperature of fiber on aluminum is changed, a phase shift in optical signal will appear. By using electronic circuits, this phase shift can be detected and compared with a reference signal which is obtained directly from the laser source. Then one can obtain information on temperature according to the difference of phases between these two signals. Two experiments have been performed in the laboratory. In the first experiment the aluminum tube is 12 cm in diameter, 8 cm in height, and 2 mm in thickness, with a fiber length about 60 m wounded 155 turns. The sensitivity is 2.1/spl times/10/sup -2/ rad//spl deg/C-m. In the second experiment, the tube is 7.5 cm in diameter and height, and 2 mm in thickness, with a fiber about 10 m length wounded in 21 turns. The sensitivity is 4.9/spl times/10/sup -2/ rad//spl deg/C-m. The temperature from 5/spl deg/C to 80/spl deg/C is measured with this design.
Description Author affiliation: Dept. of Electr. Eng., Chung-Yuan Univ., Chung-Li, Taiwan (Jin-Maun Ho; Shiu, M.T.)
ISBN 0780312333
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1993-10-19
Publisher Place China
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 260.20 kB
Page Count 5
Starting Page 500
Ending Page 504

Source: IEEE Xplore Digital Library