Title :
Broadband Single-Polarization Single-Mode Photonic Crystal Fiber Coupler
Author :
Yue, Yang ; Kai, Guiyun ; Wang, Zhi ; Zhang, Chunshu ; Lu, Yunfei ; Li, Yan ; Sun, Tingting ; Jin, Long ; Liu, Jianguo ; Liu, Yange ; Yuan, Shuzhong ; Dong, Xiaoyi
Author_Institution :
Inst. of Modern Opt., Nankai Univ., Tianjin
Abstract :
In this letter, a novel design for a photonic crystal fiber coupler with single-polarization single-mode (SPSM) functionality is proposed and investigated using a vector plane-wave expansion method and a vector finite-element method. We study the changes in the coupling lengths between the two orthogonal polarizations and the width of the SPSM coupling region with respect to the air-hole parameters. We demonstrate that the SPSM coupling range can be more than 200 nm wide for a variety of air-hole parameters and show that the position and width of the SPSM coupling region can be tailored via the diameters of the large inner air holes and the small cladding air holes
Keywords :
finite element analysis; optical design techniques; optical fibre couplers; optical fibre polarisation; photonic crystals; photonic crystal fiber coupler; single-polarization single-mode; vector finite-element method; vector plane-wave expansion; Birefringence; Couplings; Finite element methods; Optical design; Optical fiber communication; Optical fiber couplers; Optical fiber polarization; Optical reflection; Photonic crystal fibers; Sun; Coupler; finite-element method (FEM); photonic crystal fiber (PCF); plane-wave expansion method (PWEM); single-polarization single-mode (SPSM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.883313
