Do Lim Sun, Park Hyun Chul, Hwang In-Kag, Lee Sang Bae, Kim Byoung Yoon
Department of Physics, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, South Korea.
Opt Express. 2010 Feb 1;18(3):1833-40. doi: 10.1364/OE.18.001833.
We extend the previous theoretical study on the effect of outer silica cladding to the analysis on real field profiles in a practical PCF. Clear field profiles for the first higher-order cladding modes are presented and discussed. The observed mode fields are reproduced by numerical calculations, and it turns out that they correspond to LP(16) mode groups. Optical properties of the observed modes such as lobe direction and polarization are also investigated. The results of this study will be useful in the design of the PCF-based optical devices utilizing cladding mode coupling.
我们将之前关于外部二氧化硅包层效应的理论研究扩展到对实际光子晶体光纤中真实场分布的分析。给出并讨论了一阶高阶包层模式的清晰场分布。通过数值计算再现了观测到的模式场，结果表明它们对应于LP(16)模式组。还研究了观测模式的光学特性，如瓣方向和偏振。本研究结果将有助于基于光子晶体光纤的利用包层模式耦合的光学器件的设计。
