there are also CWDM type SFP transceiver available

SFPlus Transceiver is a leading manufacturer & supplier of SFP-H10GB-ACU7M SFP+ calbes. We have a large quantity of SFP-H10GB-ACU7M SFP+ cables in stock and can ship the SFP-H10GB-ACU7M SFP+ cables to you within 24 hours. All of our SFP-H10GB-ACU7M SFP+ cables are tested in-house prior to shipping to insure that they will arrive in perfect physical and working condition. We guarantee the SFP-H10GB-ACU7M SFP+ cables to work in your system and all of our SFP-H10GB-ACU7M SFP+ cables come with a lifetime advance replacement warranty.SFP is functional as an interface between a network device mother board and a copper cable or fiber optic network cable. The Small Form-Factor pluggable High-speed transceiver is used in optical communications for both telecommunication and data communications applications, it is a compact, hot-pluggable optical transceiver module.

SFP Transceiver are expected to perform at data speeds of up to five gigabits per second (5 Gbps), and possibly higher. Because SFP modules can be easily systems interchanged, electro-optical or fiber optic networks can be upgraded and maintained more conveniently than has been the case with traditional soldered-in modules. Rather than replacing an entire circuit board containing several soldered-in modules, a single module can be removed and replaced for repair or upgrading. This can result in a substantial cost savings, both in maintenance and in upgrading efforts.