Abstract
A new procedure to obtain single-polarization single-mode
polymeric optical fibers is reported. The selective polarization
confinement loss mechanism is obtained by applying external
hydrostatic pressure in a specially designed side-hole
microstructured polymer optical fiber. It is shown that, at λ
= 588 nm, pressure around 380 bar allows inducing confinement loss
as high as 35dB/m for one polarization state while the other is
guided with low loss (3 x 10<sup>-3</sup> dB/m). The loss mechanism
is shown to be related to coupling between the fundamental core
modes and the cladding modes of the pressurized fiber. Finally, the
possibility of tuning the single-polarization single-mode state with
the input wavelength with fixed pressure or by introducing small
changes in the inner ring of holes of the fiber cross section is
presented.
© 2011 IEEE
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