A novel asymmetric arrayed waveguide grating with different lengths of input/output slabs |
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| Authors: | Qiaohong Chen Wencheng Xu |
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| Institution: | Lab of Photonic Information Technology, South China Normal University, Guangzhou 510631, China Guilin University of Electronic Technology, Guilin 541004, China |
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| Abstract: | A novel arrayed waveguide grating (AWG) with asymmetric configuration is proposed. In this configuration, the length of the output slab region, the width and the spacing of the output waveguides are unequal to the corresponding parts of the input ones. Compared to a conventional symmetric AWG, the asymmetric AWG proposed in this paper has a smaller size without degrading its performance The analytic method used in a conventional symmetric AWG is extended to the asymmetric AWG. A design example of an asymmetric AWG with low insertion loss, low channel crosstalk and wide bandwidth is presented. |
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| Keywords: | Arrayed waveguide grating Density wavelength division multi/demultiplexing (DWDM) Spatial Fourier transform Analytic method |
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