Acta Photonica Sinica, Volume. 45, Issue 2, 224002(2016)
Designing and Optimizing of Surface Plasmonic Waveguide with Nonlinear Media
A kind of hybrid surface plasmonic waveguide based on the nonlinear media of SiNC/SiO2 was designed. The dependence of the distribution of longitudinal energy flux density, the effective refractive index, the propagation length and the effective area of the fundamental mode of the waveguide, on the geometrical parameters and the nonlinear volume fraction were analyzed by the finite element method. Simulated results reveal that light field is distributed mainly in the nonlinear material. The transmission parameters of the fundamental mode, such as the effective index and propagation length can be adjusted by tuning the size and the volume fraction of nonlinear material. When the volume fraction is given, the effective index and propagation length will increase as the thickness of the nonlinear material increasing. With a certain geometric parameter, the effective index will increase as the volume fraction increasing, the propagation length and the effective area will decrease. Finally, the nonlinear effect was optimized according to the analysis results, and the optimized structure size is given by that, the width of waveguide is 250 nm, the thickness of the nonlinear material layer and silicon layer is 100 nm and 150 nm respectively.
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WANG Lihua, HUANG Zhixiang, KUANG Xiaojing, WU Xianliang. Designing and Optimizing of Surface Plasmonic Waveguide with Nonlinear Media[J]. Acta Photonica Sinica, 2016, 45(2): 224002
Received: Sep. 23, 2015
Accepted: --
Published Online: Apr. 1, 2016
The Author Email: Lihua WANG (lhwang@ahu.edu.cn)