A novel design for single-polarization single-mode photonic crystal fiber at 1550 nm  

作　　者：张方迪 刘小毅 张民 叶培大 

机构地区：[1]Key Laboratory of Optical Communication and Lightwave Technology,Ministry of Education,Beijing University of Posts and Telecommunications

出　　处：《Chinese Optics Letters》2007年第5期260-263,共4页中国光学快报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China (No. 60507007); the Program for New Century Excellent Talents in University (NCET, Min Zhang 2007).

摘　　要：The present paper proposes a novel design for achieving single-polarization single-mode （SPSM） operation at 1550 nm in photonic crystal fiber （PCF）, using a rectangular-lattice PCF with two lines of three central air holes enlarged. The proposed PCF composed entirely of silica material is modeled by a full-vector finite element method with anisotropic perfectly matched layers. Simulations show that single-polarization operation within broad wavelength range can be easily realized with the proposed structure. The wide- band SPSM operation features, the low confinement losses, and the small effective mode area are the main advantages of the proposed PCF structure. A SPSM-PCF with confinement loss less than 0.1 dB/km within wavelength range from 1370 to 1610 nm and effective mode area about 4.7μm^2 at 1550 nm is numerically demonstrated.The present paper proposes a novel design for achieving single-polarization single-mode （SPSM） operation at 1550 nm in photonic crystal fiber （PCF）, using a rectangular-lattice PCF with two lines of three central air holes enlarged. The proposed PCF composed entirely of silica material is modeled by a full-vector finite element method with anisotropic perfectly matched layers. Simulations show that single-polarization operation within broad wavelength range can be easily realized with the proposed structure. The wide- band SPSM operation features, the low confinement losses, and the small effective mode area are the main advantages of the proposed PCF structure. A SPSM-PCF with confinement loss less than 0.1 dB/km within wavelength range from 1370 to 1610 nm and effective mode area about 4.7μm^2 at 1550 nm is numerically demonstrated.

关 键 词：Finite element method Light polarization Photonic crystals WAVELENGTH 

分 类 号：TN818[电子电信—信息与通信工程]