When awg regarded as space unchanged linear system , an analytical solution of out - waveguide field is obtained by using the impulse response function . the crosstalk transformation on account of apertometer and waveguide spacing is also obtained by numerical calculation 本文还将awg视为空间不变线性系统，使用点扩展函数的方法，求出awg系统输出分布的解析式，通过数值计算得到串扰与数值孔径及其波导间距的关系。
