Abstract
A piece of domestic polarization-maintaining photonic crystal fiber (PM-PCF,
964 m in length) is made into a fiber coil, and its polarization extinction ratio
(PER) is measured in a temperature range of -45-80 °C before and after PM-PCF is
wound and solidified. A fiber coil made of commercial panda PM fiber (PMF) is also
fabricated and measured for comparison. Our experiments show that the PER variation
of the PM-PCF coil (2.25 dB) is far smaller than that of the panda PMF coil (10 dB)
in the whole temperature range because PM-PCF is intrinsically insensitive to the
temperature variation and stress in the fiber coil induced by the winding and
solidification process. This characteristic is important for the real application of
PM-PCFs in temperature-insensitive fiber interferometers, fiber sensors, and optical
fiber gyroscopes.
© 2012 Chinese Optics Letters
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