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.
© 2006 Optical Society of America
Fiber Optics and Optical Communications
C. N. Alexeyev, H. G. Galamaga, and A. V. Volyar, "Filter of optical vortices: highly twisted high-birefringence optical fibers," Opt. Lett. 31, 8-10 (2006)