Analysis and Design of Array Aperture for Phased-Array Waveguide Grating Multi/Demultiplexer
阵列波导光栅复用/解复用器光栅孔径对器件性能影响的数值分析

Array aperture is an important design parameter of the phased\|array waveguide grating multi/demultiplexer. The truncation of the field due to the finite width of the array aperture, causes power to be lost at the in put aperture and the sidelobe level of the focal field will increase at the output aperture, which becomes a source of crosstalk. The array aperture angle should be chosen properly so that the corresponding crosstalk and power loss are sufficiently low.