This paper describes an intrinsic Fabry-Perot interferometer (IFPI) temperature sensor with self-strain-compensation function.The\nsensor was fabricated on a buffer-intact optical fiber using a femtosecond (fs) laser system.The use of fs laser allows the sensor to be\nfabricated in an optical fiber without the necessity of removing the polymer buffer coating, thus not compromising its mechanical\nproperty.The sensor is composed of two cascaded IFPIs in different cavity length of 100
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