圆锥形光纤能量传输特性的研究  

The energy transmission characteristics of conical optical fiber

作　　者：章玲[1] 曾燕[1] 周爱[2] 王利光[1] 陈国庆[1] 

机构地区：[1]江南大学理学院,无锡214122 [2]哈尔滨工程大学理学院,哈尔滨150001

出　　处：《黑龙江大学自然科学学报》2014年第1期117-122,共6页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(61275094);中央高校基础科研专项资金资助项目(JUSRP310);教育部创新培养项目(201210295075)

摘　　要：基于电磁场波动理论,对纳米尺度的圆锥形光纤的特征方程进行了求解。通过该理论计算以及利用COMSOL Multiphysics进行模拟,得出了锥形光纤圆柱形部分电场和能量的分布与波长的关系,在截止波长以内能量以基模形式在光纤中传输,而随着波长的增大,能量由纤芯向包层溢出越来越明显。对于光纤的圆锥体部分则得出了在波长一定的情况下,其锥长变化对光纤中能量传输的影响,并得到了在同一锥长下不同截面处的能量分布。Based on the electromagnetic wave theory, the eigenvalue equations of nanoscale conical optical fibers are solved. Through the theoretical calculations and simulations using COMSOL muhiphys- ics, the relationship between electric field and energy distribution and wavelength for cylindrical part of tapered optical fiber is obtained. In the scope of the cutoff wavelength the energy is transmitted in optical fiber in the form of fundamental, and as the wavelength increases, it overflows obviously from the core to the cladding. Besides, for the conical portion of optical fiber, the results show that the energy transmis- sion is affected by the cone length under a certain wavelength, and the energy distributions at different cross-sections are also obtained when the cone length is certain.

关 键 词：关键词 纳米锥形光纤 传输条件 能量分布 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]