Abstract
The objective of this paper is to investigate the polarizing properties of the photonic
crystal fiber with two high-index cladding defects. Using an intuitive field-distribution
model, we demonstrate the origin of polarizing based on the coupling effects between the core
and the defects. Considerably differential confinement losses and relatively broad operation
bandwidths are achieved for the two orthogonal polarizations. Moreover, the fiber allows
accurate control as both the operating wavelength and the bandwidth can be tuned continuously
by modifying the refractive index of defects. The effects of changing the hole-filling
fraction of the fiber and the positions of defects on the polarizing properties are also
discussed.
© 2010 IEEE
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