Optical fibers with high birefringence as a sensor element

The polarization maintaining fiber (PMF) sensitivity during excitation of both polarization modes is the principle of this sensor function. This excitation is caused by temperature change and by absorbing of thermal radiation. This mechanism is used for detection of temperature field disturbance as an indicator. This article describes experimental tests to determine PM fibers Panda style responses made by applying of thermal source with different initial temperature. The aim of this study was to determine the sensitivity of PMF to radiating heat, to upgrade the space configuration and time response.