What is a DWDM optical module?
The DWDM optical module is designed specifically for single-mode optical fiber (long-distance transmission) and operates between 1528.38 and 1563.86 nm (i.e. channels 17 to 61) wavelengths (i.e. DWDM wavelengths) (as specified by ITU-T). It is commonly used on network devices such as repeaters/repeaters, OTN transmission platforms, switches, servers, etc., with a maximum transmission distance of up to 120 kilometers.
DWDM optical modules, like ordinary optical modules, are optical devices that achieve photoelectric signal conversion. The difference is that DWDM optical modules utilize DWDM technology to multiplex different wavelengths or several optical signals onto a single fiber for transmission, which can effectively save fiber resources.
Common DWDM optical module types:
At present, there are various types of DWDM optical modules on the market, such as DWDM SFP optical modules, DWDM SFP+ optical modules, and DWDM SFP28 optical modules, with a maximum transmission rate of up to 25Gbps.
In addition, due to the tunable wavelength of the DWDM optical module being also fixed, the DWDM optical module is further divided into fixed DWDM optical modules and adjustable DWDM optical modules.
Development Prospects of DWDM Optical Modules:
Nowadays, DWDM optical modules are widely used in telecommunications, cable television, and data centers with high data traffic, especially for large-scale cloud service providers or multi tenant data centers (managed data centers). With the rapid growth of network traffic, data centers are constantly upgrading and iterating, bringing huge opportunities to the optical module industry. As the core component of long-distance and high-capacity optical networks, DWDM optical modules are developing towards small size, high speed, and low power consumption in order to meet market trends.
Summarize
In the past few years, DWDM optical modules have been widely used in the industry, especially in long-distance transmission. Although the market share of adjustable DWDM optical modules is currently small, we can still see its huge potential for development. Whether adjustable is needed or not depends on the specific network situation.
