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Simultaneous Measurement of Temperature and Strain Based on a Polarization-Maintaining Few-Mode Fiber

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An optical sensor based on a polarization-maintaining few-mode fiber (PM-FMF) for simultaneous sensing of temperature and strain is demonstrated, for the first time. The sensor has a temperature sensitivity of about 175 pm/°C and a strain sensitivity of about 5 pm/με with an accuracy of 0.1°C and 10 με.

© 2017 Optical Society of America

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