Efficient and broadband guided wave one-way mode-order conversion with theoretical and numerical analysis

被引：1
作者：
Ustun, Kadir [1 ,2 ]
Kurt, Hamza [3 ]
机构：
[1] Middle E Tech Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey
[2] Hitit Univ, Dept Elect & Elect Engn, TR-19030 Corum, Turkey
[3] TOBB Univ Econ & Technol, Dept Elect & Elect Engn, TR-06560 Ankara, Turkey
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2013年 / 30卷 / 11期
关键词：
NONLINEAR PHOTONIC CRYSTAL; SLOW-LIGHT; TRANSMISSION; PROPAGATION; RECIPROCITY; ISOLATOR; DIODE;
D O I：
10.1364/JOSAB.30.002992
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this article, an efficient method of asymmetric conversion of guided modes is investigated. From a basic excitation consisting of (mainly) the lowest-order mode of the input multimode strip waveguide, we achieve a conversion efficiency of similar to 60% on average, in the forward propagation case, while the backward propagation is suppressed below 10%. The analytical formulation is based on electromagnetic wave theory with orthogonality relations. Affirmative results between the theoretical and numerical findings based on time and frequency domain analysis are observed. The results of this study will increase the ease of implementing an optical isolator if the breaking time-reversal symmetry could be achieved by nonlinear optics or magneto-optic configurations. (C) 2013 Optical Society of America
引用
收藏
页码：2992 / 2998
页数：7
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