通过数学分析，定量地描述了高密度光波分复用传输系统的信道串扰与信道间隔及其信道带宽的关系，从理论上计算出了单模光纤低损耗窗口在各种情况下最多能复用的信道数。简单介绍了光波分复用器的性能指标及适应于不同光波分复用传输系统中的光波分复用器 Mathematical analysis quantitatively describes the relationship between channel crosstalk and channel spacing and channel bandwidth in a high-density optical wavelength division multiplexing transmission system, and theoretically calculates that the single-mode optical fiber low loss window can be multiplexed in most cases The number of channels. The performance index of optical wavelength division multiplexer is briefly introduced and the optical wavelength division multiplexer adapted to different optical wavelength division multiplexing transmission system