WAVELENGTH DIVSION MULTIPLEXING (CWDM)

Advantages: 1. Ultra-large Capacity: The core advantage of DWDM. The single-fiber transmission capacity can reach the Tbps level (terabits per second). 2. Ultra-long-distance Transmission: Combined with EDFA optical amplifiers and dispersion management technology, DWDM enables unrepeatered transmission over thousands of kilometers. 3. High Flexibility and Scalability: When capacity expansion is needed, only new wavelength channels need to be added at both ends without laying new optical fibers, making it a true "revolution in optical fiber resource utilization". 4. Transparent Transmission: As a physical layer technology, DWDM is independent of protocols and rates. It can simultaneously carry various client signals such as Ethernet, SDH/SONET, Fibre Channel, and OTN.

WAVELENGTH DIVSION MULTIPLEXING (CWDM)

DWDM is the cornerstone of modern communication backbone networks.

• National/Provincial Long-Distance Backbone Networks: Connect core routers across different cities and countries, carrying the backbone traffic of the entire Internet.

• Large-Scale Data Center Interconnection (DCI): For cloud giants such as Google, Microsoft, and Amazon, which need to synchronize massive amounts of data between globally distributed data centers, DWDM is the only choice.

• 5G Core Networks and Transport Networks: At the aggregation and core layers of 5G, extremely high bandwidth is required to connect various core network elements.

• Cable TV Backbone Networks and Large Enterprise Private Networks.