Abstract
We propose a side-hole polarization-maintaining
photonic crystal fiber (PM-PCF) with ultrahigh
polarimetric sensitivity to hydrostatic pressure. The
proposed fiber has a very simple structure with a core
surrounded by a double row of large air holes and a
central row of small air holes. A pair of ultralarge
side holes was symmetrically introduced into the silica
cladding of the fiber to enhance the polarimetric
response to hydrostatic pressure. Modal birefringence
$B$ as large as $2.34 \times 10^{-3}$ and polarimetric pressure sensitivity
$dB/dp$ as high as $-2.30 \times 10^{-5}$ MPa$^{- 1}$ were achieved at 1.55 $\mu$m for the proposed fiber. Combining the
advantages of both side-hole fibers and PM-PCFs, it is
believed to be an excellent candidate for future
applications of hydrostatic pressure measurement.
© 2011 IEEE
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