Compact Wavelength Demultiplexer Structure Based on Side-Coupled Cavities
CHEN Zhao1,2, SONG Gang1,2, YU Li1,2**, CHEN Jian-Jun1,2, XIAO Jing-Hua1,2
1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876 2School of Science, Beijing University of Posts and Telecommunications, Beijing 100876
Abstract：A novel structure based on a side-coupled cavity for optical wavelength demultiplexing is proposed and demonstrated numerically by using the two-dimensional finite element method. It is found that the transmission wavelength of each channel can be tuned by adjusting the geometrical parameters of the structure and the material filling the side-coupled cavity. Moreover, by introducing a reflection nanocavity, the value of the transmitted-peak can be improved significantly. The results of theoretical analysis and simulation are well consistent with each other.
2012, Vol. 29 
