Abstract
${\rm TE}$-pass and ${\rm TM}$-pass polarizing waveguides were fabricated by adjusting the
birefringence properties of multi-layer stacks. The desired values of
indices of refraction and birefringence were obtained by the proper
selection and customization of core and cladding materials. The technique
developed was used in the fabrication of waveguides in various design
configurations such as etched ribs, backfilled trenches and photobleached
channels. Both passive and active (electro-optic) core materials were
successfully used in demonstrating the polarization extinction ratios as
high as 61 dB. To our knowledge, this is the highest extinction ratio
reported with polarizing polymer waveguides. In the case of electro-optic
polymer waveguides, the designs were modified to enhance the electric field
strength in the core without compromising the polarizing extinction ratios
of the waveguides.
© 2009 IEEE
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