In fiber-optic communications, WDM (wavelength-division multiplexing) is a technology that multiplexes a range of optical carrier signals onto a single optical fiber using varying laser light wavelengths. This method allows for bidirectional communication over one fiber strand as well as capacity multiplication. WDM technology is applied to an optical carrier typically defined by its wavelength.

CWDM SFP is a kind of optical transceiver that incorporates CWDM technology. Similar to traditional SFPs, CWDM SFP is also a hot-swappable input / output unit that plugs into a switch or router's SFP port or slot and connects the port to the fiber-optic network. It is a convenient and cost-effective solution for adopting Gigabit Ethernet and Fiber Channel (FC) on campus, data center, and metropolitan access networks.

CWDM SFP Transceivers With Different Wavelengths

CWDM SFP generally come in eight wavelengths ranging from 1470 nm to 1610 nm. To better recognize the wavelength to which the Gigabit Ethernet channel is mapped when using these CWDM SFPs, we use the color markings on the devices to accomplish this, such as color arrow on the tag and color coded bale clasp. This is why for applications there are many SFPs with varying colors. For instance, we're taking Cisco here. For instance, we're taking Cisco here. The following table lists the wavelength and color codes of the CWDM SFPs.


Cisco Part No. Unoptix Part No. Description Color
CWDM-SFP-1470 SFP-1G-CWDM-EX-47 Cisco CWDM 1470 nm SFP Gray
CWDM-SFP-1490 SFP-1G-CWDM-EX-49 Cisco CWDM 1490 nm SFP Violet
CWDM-SFP-1510 SFP-1G-CWDM-EX-51 Cisco CWDM 1510 nm SFP Blue
CWDM-SFP-1530 SFP-1G-CWDM-EX-53 Cisco CWDM 1530 nm SFP Green
CWDM-SFP-1550 SFP-1G-CWDM-EX-55 Cisco CWDM 1550 nm SFP Yellow
CWDM-SFP-1570 SFP-1G-CWDM-EX-57 Cisco CWDM 1570 nm SFP Orange
CWDM-SFP-1590 SFP-1G-CWDM-EX-59 Cisco CWDM 1590 nm SFP Red
CWDM-SFP-1610 SFP-1G-CWDM-EX-61 Cisco CWDM 1610 nm SFP Brown


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)

CWDM SFPs Solutions

Unoptix provides a cost-effective solution for CWDM SFPs that is 100 percent compatible with many leading brand devices (Cisco, HP, Juniper, etc.) .Compatible CWDM SFPs with multi-rate transceivers for data rates from 100 Mbps up to 4 Gbps, transfer distance from 20 to 40 km, 40 to 80 km and 80 to 120 km, as well as various color marking options are offered in Unoptix that can better meet the varying parameter criteria of our consumers. CWDM SFP transceivers also feature digital diagnostics, also known as digital optical monitoring (DOM), which is endorsed by most switch and router OEMs in their operating system software.

For Cisco clients, we strongly suggest our CWDM SFP products in our shop. In addition, we can deliver other goods that are consistent with Cisco's custom version. If you want to order other compatible brands or get more data about these goods, please visit our website.