Tunable DWDM SFP+ is one of DWDM optical modules. It is usually used in DWDM systems.

Why suggest don‘t buy tunable DWDM SFP+ optical modules?

Because in the market, the price of tunable SFP+ optical modules is usually two to four times that of DWDM SFP+ optical modules.  Really expensive. But it‘s really convenient for engineers to use. Compare to prepare lots of dwdm SFP+, It‘s really costeffective, Can‘t help but want to buy

In traditional DWDM systems, fixed-wavelength SFP+ optical modules are often used as light sources in the field of optical communications. However, with the continuous development, application and promotion of optical communication systems, the shortcomings of DWDM-SFP+ optical modules are gradually exposed. The following are the reasons why adjustable SFP+ optical modules are needed in DWDM systems:
 
On the one hand, a spare SFP+ optical module must be prepared for each DWDM wavelength to avoid unnecessary failures. In traditional DWDM systems, a small amount of additional SFP+ optical modules is sufficient. However, with the development of technology, the number of wavelengths in DWDM 50GHz has now reached hundreds. This means that people must provide as many as hundreds of backup DWDM SFP+ optical modules, which will greatly increase operating costs. Adjustable SFP+ optical modules provide equipment manufacturers and operators with great flexibility, realize the optimization of overall network performance, and greatly reduce existing operators‘ inventory requirements for DWDM SFP+ optical modules.



On the other hand, in a DWDM system, it may be necessary to use a large number of SFP+ optical modules with different wavelengths to support dynamic wavelength allocation in the optical network and improve network flexibility. However, the utilization rate of each optical module is very low, resulting in a waste of resources. The emergence of tunable DWDM SFP+ optical modules effectively solves this problem. Using tunable SFP+ optical modules, different DWDM wavelengths can be configured and output in the same light source. These wavelength values and intervals meet the requirements of ITU-T (50GHz DWDM ITU-T full C band).

Because the tunable DWDM SFP+ optical module has the characteristics of flexible selection of working wavelength, it has great practical value in applications such as optical fiber communication wavelength division multiplexing systems, optical add/drop multiplexers and optical cross-connects, optical switching equipment, light source components, etc. 

HTF sold 600pcs tunable each month, In order to meet engineers requirement. HTF has a full range of optical module products including tunable DWDM SFP+ optical modules, 100G QSFP28 40km and 80km are in mass production, and has actively participated in the 5G construction of operators.