Modular interference characteristic of two-mode fiber  

作　　者：王河林 毕卫红 杨爱军 刘丰 

机构地区：[1]College of Information and Engineering,Yanshan University, Qinhuangdao 066004 [2]College of Information and Engineering, Yanshan University,Qinhuangdao 066004 [3]College of Mathematics and Information Science,Hebei Normal University,Shijiazhuang 050016 [4]College of Information and Engineering, Yanshan University, Qinhuangdao 066004

出　　处：《Chinese Optics Letters》2006年第11期621-624,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 under Grant No. 50477001.

摘　　要：The modular interference characteristics of circular-core and elliptical-core two-mode fibers are investigated in theory. The intensity distribution and figure of two-lobe mode patterns are evaluated and simulated quantitatively for different phase difference change between LP01 and LP^en mode. The interference mode patters of elliptical-core and circular-core two-mode fibers are compared, the result shows that the two-lobe interference patters of the two-mode fibers generate energy exchange and oscillation, and the difference is that the interference mode patterns of circular-core two-mode fiber are almost elliptical, while the interference mode pattern of elliptical-core two-mode fiber is approximately circular on condition that proper selection of the ellipticity. Their two-dimensional （2D） profile determines the choice of the core shape of the information pick-up fiber.OCIS codes： 060.2310, 030.1670, 060.2270, 030.4070.The modular interference characteristics of circular-core and elliptical-core two-mode fibers are investigated in theory. The intensity distribution and figure of two-lobe mode patterns are evaluated and simulated quantitatively for different phase difference change between LP01 and LP^en mode. The interference mode patters of elliptical-core and circular-core two-mode fibers are compared, the result shows that the two-lobe interference patters of the two-mode fibers generate energy exchange and oscillation, and the difference is that the interference mode patterns of circular-core two-mode fiber are almost elliptical, while the interference mode pattern of elliptical-core two-mode fiber is approximately circular on condition that proper selection of the ellipticity. Their two-dimensional （2D） profile determines the choice of the core shape of the information pick-up fiber.OCIS codes： 060.2310, 030.1670, 060.2270, 030.4070.

关 键 词：MODIFICATION OSCILLATIONS Two dimensional 

分 类 号：TN818[电子电信—信息与通信工程]