Method for reusing wavelength of arrayed waveguide grating switching structure

The invention relates to a method for reusing the wavelength of an arrayed waveguide grating switching structure. The method comprises the step decomposing an arrayed waveguide grating switching structure constructed by a large-scale arrayed waveguide grating into an arrayed waveguide grating switching structure constructed by small-scale arrayed waveguide gratings. According to the wavelength reusing method provided by the invention for the arrayed waveguide grating switching structure, a large-scale AWG (Arrayed Waveguide Grating) is decomposed into a combination of a plurality of small-scale AWGs, and each input and output node can be equipped with multiple optical transceivers can be by using the decomposition method, thereby being capable of reducing the wavelength running range, and enabling the wavelength to be reused. 本发明涉及种阵列波导光栅交换结构的波长重用方法，所述方法包括：将由大规模阵列波导光栅构建的阵列波导光栅交换结构分解为由小规模阵列波导光栅构建的阵列波导光栅交换结构；本发明提供的种阵列波导光栅交换结构的波长重用方法将个大规模AWG分解为若干个小规模AWG的组合，并且利用该分解方法可以为每个输入输出节点配备多个光收发机，从而可以缩小波长调谐范围，使得波长得以重用。