Abstract
We investigate the temperature dependence of CrossTalk (CT) for PANDA Polarization maintaining fiber (PMF). The test temperature ranges from −55 to 85 °C, and the tested fiber was loose wound. The mismatch in thermal expansion coefficient between the boron-doped parts and the core can be varied by controlling the doping concentration in the stress and core regions. The whole temperature CT variation of optimized PMF would be reduced to <2.3dB. This characteristic is important for the real application of PANDA PMFs in temperature-insensitive fiber interferometers, fiber sensors, and optical fiber gyroscopes.
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