Supermode analysis of seven-core photonic quasi-crystal fibers  

作　　者：李志全 刘梦 郝锐 童凯 王志斌 

机构地区：[1]Institute of Electrical Engineering,Yanshan University

出　　处：《Chinese Optics Letters》2013年第8期35-38,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61172044 and 61107039);the Natural Science Foundation of Hebei Province(No.F2012203204)

摘　　要：We design custom-shaped modes for a sixfold symmetric photonic quasi-crystal fiber （PQF）, an optical fiber with a sixfold symmetric quasi-periodic array of air holes in the cladding region. The supermodes of the PQF are calculated by the finite element method, and the coupling of an in-phase supermode for the quasi-periodic optical fiber is numerically optimized to obtain identical values. The optimization is guaranteed by the selection of appropriate PQF design parameters. The eigenvalue equation associated with a seven-core PQF is derived from a coupled mode equation. We realize mode shaping and provide the far-field distribution mode of PQFs. The results are beneficial for the structural design and uniform distribution of the in-phase supermodes of PQFs.We design custom-shaped modes for a sixfold symmetric photonic quasi-crystal fiber （PQF）, an optical fiber with a sixfold symmetric quasi-periodic array of air holes in the cladding region. The supermodes of the PQF are calculated by the finite element method, and the coupling of an in-phase supermode for the quasi-periodic optical fiber is numerically optimized to obtain identical values. The optimization is guaranteed by the selection of appropriate PQF design parameters. The eigenvalue equation associated with a seven-core PQF is derived from a coupled mode equation. We realize mode shaping and provide the far-field distribution mode of PQFs. The results are beneficial for the structural design and uniform distribution of the in-phase supermodes of PQFs.

关 键 词：Eigenvalues and eigenfunctions Optical fibers Optimization QUASICRYSTALS Structural design 

分 类 号：TN253[电子电信—物理电子学]