An asymmetric dual-core single-polarization single-mode photonic crystal fiber coupler  

作　　者：李宏雷 娄淑琴 陈卫国 王立文 简水生 

机构地区：[1]Key Lab of All Optical Network and Advanced Telecommunication Network of Education Ministry of China,Institute of Lightwave Technology,Beijing Jiaotong University

出　　处：《Optoelectronics Letters》2010年第4期272-274,共3页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 60777033);the Key Project of Education Ministry of China(No.308002)

摘　　要：A vectorial finite element method(VFEM) is adopted to investigate the novel single-polarization single-mode(SPSM) photonic crystal fiber(PCF) coupler which has asymmetric dual-core and two lines of enlarged air holes.It is demonstrated that the SPSM region of the designed fiber can be more than 250 nm wide with a set of optimized air-hole parameters and the width of the SPSM region could change slightly by fine adjustment of the inner large air holes.The coupling length between the odd and even x-polarization modes is also investigated through fine-tuning the large and small air-hole diameters.A vectorial finite element method（VFEM） is adopted to investigate the novel single-polarization single-mode（SPSM） photonic crystal fiber（PCF） coupler which has asymmetric dual-core and two lines of enlarged air holes.It is demonstrated that the SPSM region of the designed fiber can be more than 250 nm wide with a set of optimized air-hole parameters and the width of the SPSM region could change slightly by fine adjustment of the inner large air holes.The coupling length between the odd and even x-polarization modes is also investigated through fine-tuning the large and small air-hole diameters.

关 键 词：光子晶体光纤 光纤耦合器 单偏振 非对称 单模 双核 矢量有限元法 气孔直径 

分 类 号：TN253[电子电信—物理电子学] TN248