CWDM SFP Transceiver: How Much Do You Know About It?

You may have seen SFP modules which are with colorful markings, such as color arrow on label and color coded bale clasp. And most of them are named CWDM SFP or DWDM SFP transceivers. But do you know why they are designed as various colors? Here will give the answer by introducing CWDM SFP transceivers in details.

What’s CWDM SFP Transceiver?

CWDM SFP is a kind of optical transceiver which combines the CWDM technology. Similar with the traditional SFPs, CWDM SFP is also a hot-swappable input/output device that plugs into an SFP port or slot of a switch or router, and links the port with the fiber-optic network. It is a convenient and cost-effective solution for the adoption of Gigabit Ethernet and Fibre Channel (FC) in campus, data-center, and metropolitan-area access networks.


CWDM SFP Transceivers With Different Wavelengths

In general, CWDM SFPs come in eight wavelengths that range from 1470 nm to 1610nm. In order to better identify the wavelength to which the Gigabit Ethernet channel is mapped when using these CWDM SFPs, we use the color markings on the devices, such as color arrow on label and color coded bale clasp to achieve it. This is why there are many SFPs with different colors for applications. Here, we take Cisco for example. Here, we take Cisco for example. The following table lists the CWDM SFPs with their wavelength and color codes.

cisco cwdm sfp information

Standards and Regulatory Compliance

  • RoHS compliant
  • IEEE Std 802.3 (Gigabit Ethernet 802.3z,802.3ah, FastE 802.3u)
  • Fibre Channel Draft Physical Interface Specification FC-PI-2
  • Compliant with SONET/SDH optical standards
  • SFP MSA (multi-source agreement)

Protocols and Data Rates

  • Fast Ethernet (125Mbps)
  • Gigabit Ethernet (1.25Gbps)
  • 1G and 2G Fibre Channel
  • SONET OC-3 (155Mbps), OC-12 (622Mbps), and OC-48 (2.488Gbps)

Fiberstore CWDM SFPs Solution

Fiberstore offers a cost-effective CWDM SFPs solution which is 100% compatible with many devices of major brands, e.g. Cisco, HP or Juniper etc. Compatible CWDM SFPs with multi-rate transceiver for data rates from 100 Mbps up to 4 Gbps, transfer distance at 20 to 40km, 40 to 80km and 80 to 120km as well as different color marking options are available in Fiberstore which can better satisfy the different requirements on parameters of our clients. CWDM SFP transceivers also feature digital diagnostics, also known as digital optical monitoring (DOM), which is supported by the majority of switch and router OEMs in their operating system software.


For Cisco users, we highly recommend our CWDM SFP products, such as CSFP-1G47-80-CO, CSFP-1G49-80-CO, CSFP-1G51-80-CO, CSFP-1G53-80-CO, CSFP-1G55-80-CO, CSFP-1G57-80-CO, CSFP-1G59-80-CO, CSFP-1G61-80-CO that are the corresponding compatible CWDM SFPs of Cisco’s. Additionally, we can offer other products which are the custom version for Cisco compatible. Actually, more products are waiting for you. If you want to order other brand compatible or get more information about these products, we welcome you to visit our website or contact us over E-mail directly.

Related Article:
Everything You Need to Know Before Buying CWDM and DWDM SFP+ Transceivers

This entry was posted in CWDM/DWDM Transceivers, Fiber Optic Transceivers and tagged . Bookmark the permalink.