Polarization splitter based on hybrid-cladding dual-core photonic crystal fibers

摘要

This paper proposed a novel type of hybrid-cladding dual-core photonic crystal fiber (PCF) with two larger air-holes around each fiber core. The effects of structural parameters on coupling length were analyzed through full-vector finite element method. A 658 mu m-long polarization beam splitter based on the proposed dual-core PCF was completed by birefringence effect. Numerical simulations demonstrated that the polarized light extinction ratio was -42.9 dB at the wavelength of 1.55 mu m. The bandwidth arranged over 120 nm when the extinction ratio was lower than 10 dB, which exhibited high performance of splitting one light into two orthogonal polarization states. (C) 2015 Elsevier GmbH. All rights reserved.