The wavelength of the 10G conventional SFP+ DWDM optical module is fixed, while the 10G SFP+ DWDM Tunable optical module can be configured to output different DWDM wavelengths. The wavelength tunable optical module has the characteristics of flexibly selecting the working wavelength. It has great practical value in applications such as systems, optical add-drop multiplexers and optical cross-connects, optical switching equipment, and spare parts for light sources. The 10G SFP+ DWDM optical module with tunable wavelength is more expensive than the 10G conventional SFP+ DWDM optical module, but it is also more flexible in use.

How to achieve efficient sharing and multiplexing of basic resources at the edge access layer is a network capability and competitiveness that operators need to build to achieve fast and efficient access to various services and move towards all-optical services. In all-optical networks, tunable DWDM lasers have great application prospects in communication networks, and have been widely used in backbone and metro core aggregation networks. Practice has proved that it can greatly simplify network construction and operation and maintenance.

From the backbone network to the metro core, to the metro edge access, wavelength-tunable DWDM optical modules, with a large number of waveguides and large capacity, do not need to identify the wavelength of optical modules, reduce the type and quantity of spare parts, and greatly simplify network construction and operation. dimension. At present, many operators at home and abroad have deployed wavelength division fronthaul solutions based on DWDM tunable optical modules.