Mecozzi A
Opt Lett. 1995 Sep 15;20(18):1859-61. doi: 10.1364/ol.20.001859.
Butterworth filters of second or higher order periodically inserted along a soliton transmission line, although they are flat at bandpass center, give to first order a nonzero restoring force for frequency and amplitude displacements. The amplified spontaneous emission generated at the filter center frequency is significantly less than that generated with fixed étalons for the same damping strength.
沿孤子传输线周期性插入的二阶或更高阶巴特沃斯滤波器，尽管在带通中心处是平坦的，但对于频率和幅度偏移，其一阶会产生非零恢复力。在滤波器中心频率处产生的放大自发辐射明显小于在相同阻尼强度下使用固定标准具产生的放大自发辐射。
