Optical fiber temperature sensor using a gain-switched Fabry-Perot semiconductor laser self-seeded from a linearly chirped fiber Bragg grating

Abstract

We present a highly sensitive fiber temperature sensor based on a gain-switched Fabry-Perot semiconductor laser self-seeded from a linearly chirped fiber Bragg grating. A temperature resolution of better than 0.1°C was demonstrated. This sensor not only has the advantage of robustness against fluctuating light levels, but also obviates the need for fine wavelength discrimination. © 1998 American Institute of Physics.