Filter of optical vortices: highly twisted high-birefringence optical fibers.
Modes and bandgap structure of highly twisted high-birefringence weakly guiding fibers are studied in the scalar approximation. It is shown that within the gap the system can serve as a filter of circular optical vortices.
Alexeyev
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CN
Physical Department, Taurida National V. Vernandsky University, Vernadsky Avenue 4, Simferopol 95007, Crimea, Ukraine.
Galamaga
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HG
Volyar
A V
AV