For the first time, we experimentally study the transversal-stress (T-stress) induced polarization crosstalk behaviors inpolarization maintaining fibers (PMFs) including the linearity, sensitivity, response time and recovery time, using adistributed polarization crosstalk analysis (DPXA) system. Using two Panda PMFs with or without polyacrylate buffercoating and one Bow-tie PMF with golden polyimide coating as experimental samples, we find that: Ⅰ) the polarizationcrosstalk can be highly linear with the T-stress for PMFs no matter with or without coating; Ⅱ) the polyacrylate coatingcan reduce the crosstalk sensitivity of naked PMFs by more than hundreds of times, while replacing the polyacrylatecoating with polyimide coating can increase the sensitivity by tens or even hundreds of times; Ⅲ) the polyacrylatecoating can induce a significant recovery time of crosstalk when a T-stress is removed after a long loading timecompared with that in naked PMFs or golden PMF with polyimide coating, however the crosstalk response speed is toofast to be measured by the DPXA system. Additionally, we also find that the current polyimide coating technique stillneeds to be improved further to reduce the crosstalk base level. This work will be very useful for PMF-based distributedsensing applications and sensing PMF manufacturing.
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