An ultra-short double-wavelength optical power splitter for two waveguides operation based on photonic crystal multimode interference

作     者：Li, Wei Xu, Xu-ming 

作者机构：Nanchang Inst Technol Dept Sci Nanchang 330099 Peoples R China Nanchang Univ Dept Phys Nanchang 330031 Peoples R China 

出 版 物：《OPTICS COMMUNICATIONS》 (光学通讯)

年 卷 期：2010年第283卷第20期

页      面：3850-3853页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Jiangxi Province Nature Science Foundation [0612043  2007GZW2547] 

主　　题：Double-wavelength optical power splitter Multimode interference Finite-difference time-domain method Photonic crystal waveguide 

摘      要：In this paper, we design an ultra-short 1 x 2 1310/1550 nm double-waveguide optical power splitter based on photonic crystal multimode interference. The device can be used to divide the input beam equally for both 1310 nm and 1550 nm at the same time. The total multimode waveguide length of this device is only about 13 mu m, which is one 210th of the conventional dielectric counterparts reported. On the basis of the guided-mode propagation analysis method, the self-imaging effect is discussed for the case of symmetric incidence. The finite-difference time-domain method is used to simulate the propagation of the beam in the multimode interference. The results show that the repetitive appearances of single image and twofold image of the input field occur alternatively in this device. (C) 2010 Elsevier B.V. All rights reserved.