Slow light transmission in a photonic crystal power splitter with parallel outputs

被引：3
作者：
Moghaddam, Maliheh Khatibi [1 ,2 ]
Mirsalehi, Mir Mojtaba [2 ]
Attari, Amir Reza [2 ]
机构：
[1] Ferdowsi Univ Mashhad, Commun & Comp Res Ctr, Mashhad, Iran
[2] Ferdowsi Univ Mashhad, Dept Elect Engn, Mashhad, Iran
来源：
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS | 2014年 / 12卷 / 01期
关键词：
Slow light; Photonic crystal; Power splitter; WAVE-GUIDE BENDS; POLARIZATION BEAM SPLITTER; HIGH-BANDWIDTH; INTEGRATION; JUNCTION; DESIGN;
D O I：
10.1016/j.photonics.2013.08.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, we investigate coupling of light to slow modes in a photonic crystal power splitter composed of a Y-junction and two 60 degrees bends. First, a combination of two cascaded bends which is commonly used in integrated photonic crystal circuits is studied in slow light frequency regime. We propose a structure that its transmission spectrum covers the high group-index frequencies near the band edge. Also, by structural modifications, high transmission near to 95% is achieved in slow light bandwidth. Next, we study the complete structure of a photonic crystal power splitter with parallel outputs based on a Y-junction integrated with two 60 bends. Using modified bends and reducing sharpness of Y-junction, the efficiency of splitting increases in both high and low group-index frequency bands. The optimized structure has an average efficiency of 82% in slow mode regime. This structure can be used in photonic crystal based slow light devices, such as Mach-Zehnder interferometers. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：75 / 82
页数：8
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