Abstract

We present, for the first time to our knowledge, a distributed optical-fiber temperature sensor, based on a pulsed laser, that provides distributed temperature measurement by use of a single pulse propagating in an optical fiber. The system uses the frequency-derived technique based on the optical Kerr effect. The performance of the system is investigated for the temperature range 33–150 °C. A linear relationship between the temperature and the derived frequency is obtained. The best temperature resolution was determined to be ±1.2 °C. The best measured spatial resolution was 0.56  m.

© 1997 Optical Society of America

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