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Proceedings Paper

Photonic crystal waveguide directional coupler based on adiabatic coupling
Author(s): Ningfeng Bai; Jingbao Xiao; Xu Liu; Mingde Zhang; Xiaohan Sun
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Paper Abstract

An optimal design of Photonic crystal waveguide (PCW) directional coupler (DC) with adiabatic coupling is presented in this paper. Planar wave expand (PWE) method and FDTD method are used to analyze and optimize PCW-DC. It is shown that use this PCW-DC can achieve efficient transmission ratio in cross state, bar state and power division state at different coupling length. The simulation results show that the coupling ratio can be higher than 90% in some selective wavelength in these states. With the help of adiabatic coupling and bent PCW, the coupling coefficient of two parallel SMFs whose distance from each other at standard interval of 125μm can be higher than 90%. This also suggests that this device can realize a very efficient add/drop filter device which can be used in WDM system.

Paper Details

Date Published: 28 January 2006
PDF: 6 pages
Proc. SPIE 6025, ICO20: Optical Communication, 602506 (28 January 2006); doi: 10.1117/12.666986
Show Author Affiliations
Ningfeng Bai, Southeast Univ. (China)
Jingbao Xiao, Southeast Univ. (China)
Xu Liu, Southeast Univ. (China)
Mingde Zhang, Southeast Univ. (China)
Xiaohan Sun, Southeast Univ. (China)

Published in SPIE Proceedings Vol. 6025:
ICO20: Optical Communication
Yun-Chur Chung; Shizhong Xie, Editor(s)

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