Abstract
A kind of novel highly birefringent terahertz (THz) fibers based on
super-cell structure, which has the advantage of minimizing the structural
distortion during fabrication is proposed. The dielectric material (such as
polymer) with airholes and the surrounding air are used as the fiber core
and the fiber cladding, respectively. Uniform airholes with the diameter
that is much smaller than the operation wavelength are used to form the
basic cell. Two typical highly birefringent THz fibers with cross sections
of the diamond-shaped and the dumbbell-shaped cells are introduced and
investigated, respectively. High birefringence up to the order of 0.01 is
achieved, and the power distributions of the modal power and the relative
absorption loss of the proposed THz fibers are also investigated. The
proposal for the THz fibers based on super-cell structure indicates a method
to achieve unique property as the THz fibers with complex cross
section.
© 2010 IEEE
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