密集波分复用（DWDM）技术具有高容量传输和抗干扰能力强的特点

随着5G时代的到来，在 fiber networks 中获取更宽广的带宽需求已成为服务提供商面临的首要挑战。DWDM（密集波分复用）作为一种先进的技术方案，在当前光纤通信领域具有广泛的应用前景。它不仅能够灵活扩展现有光纤骨干网的能力，并为其后续 5G 技术部署提供技术支持。

Dense Wavelength Division Multiplexing (DWDM) technique enables the simultaneous combination and transmission of multiple optical wavelengths within a single fiber optic cable. For instance, if a typical fiber has a capacity of 2.5 Gb/s, DWDM technology can multiplex 8 separate fiber channel signals (OC), effectively expanding the single-fiber transmission capacity to 20 Gb/s. Common DWDM configurations include 4, 8, 16, 32, and 40 channel setups. Currently