The effect of dielectric chirality on the polarization states and mode indices of guided modes in photonic crystal fiber (PCF) is investigated by a modified plane-wave expansion (PWE) method. Using a solid-core chiral PCF as a numerical example, we show that circular polarization is the eigenstate of the fundamental mode. Mode index divergence between right-handed circularly polarized (RCP) and left-handed circularly polarized (LCP) states is demonstrated. Chirality’s effect on mode index and circular birefringence (CB) in such a PCF is found to be similar to that in bulk chiral media.
© 2010 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: March 4, 2010
Revised Manuscript: July 7, 2010
Manuscript Accepted: July 12, 2010
Published: August 10, 2010
Junqing Li, Qiyao Su, and Yusheng Cao, "Circularly polarized guided modes in dielectrically chiral photonic crystal fiber," Opt. Lett. 35, 2720-2722 (2010)