A temperature-sensor system based on low-coherence interferometry with a fiber Mach–Zehnder interferometer as a phase modulator was implemented. A measurement range of 20 to 800 °C with a resolution of 0.025 °C (corresponding to 0.0004 fringe) was achieved with a 1-mm-long fiber Fabry–Perot interferometer as the sensing element.
© 1997 Optical Society of America
Han-Sun Choi, Henry F. Taylor, and Chung E. Lee, "High-performance fiber-optic temperature sensor using low-coherence interferometry," Opt. Lett. 22, 1814-1816 (1997)