Intel 100G CWDM4 QSFP28 Module (SPTSBP3CLCZA) – 10pack sealed
with 30 days warranty

Currently, the QSFP28 is considered to be the primary form factor for 100G Ethernet in enterprise networks and data centers. But how much do you know about them? In the previous post, theQSFP28 SR4,QSFP28 LR4, andQSFP28 PSM4have been narrated in detail. Here, we are going to talk about the QSFP28 CWDM4 optical transceiver through the perspectives of definition, working principle, specifications, applications, and FAQs.

What Is 100G QSFP28 CWDM4?

TheQSFP28 100G CWDM4is a hot-pluggable, full-duplex, and photonic-integrated optical transceiver designed to comply with the QSFP MSA, CWDM4 MSA, and portions of IEEE P802.3bm standard. It feature with LC duplex connectors, which can provide a high-speed 100Gbps transmission with a maximum distance of 2km on SMF. More specifically, the QSFP 100G CWDM4 module adopts WDM technology that enables four wavelengths to be multiplexed to transmit on a single fiber, which greatly saves optical fiber resources. The maximum transmission distance of QSFP28 LR4 is 10km which includes the transmission distance of the 100G QSFP28 CWDM4 module. So why don’t we use the QSFP 100G LR4 to transmit 2km directly? The reason is that the QSFP28 LR4 transceiver has a higher consumption and higher laser cost than QSFP 100G CWDM4. Thus the 100G CWDM4 modules make up for the drawback that the cost for QSFP 100G LR4 transmitting 2km is too high.

How Does QSFP28 CWDM4 Work?

The QSFP28 CWDM4 optical transceiver module converts four input wavelengths of 25Gb/s electrical data to four channels of CWDM optical signals and then multiplexes them into a single channel for 100Gb/s optical transmission. On the other end, the QSFP 100G CWDM4 de-multiplexes a 100Gb/s optical input into four channels of CWDM optical signals and then converts them to four output channels of electrical data on the receiver side.

Figure 1: QSFP28 CWDM4 Module Working Principle

FS QSFP28 CWDM4 Datasheet

All FS QSFP 100G CWDM4 optical transceivers are manufactured to satisfy the industry standard and have been recognized by numerous customers. They are proven to be compatible with over 200 vendors, such as Cisco, Juniper, Arista, Brocade, Dell, and so on.

QSFP 100G CWDM4 SpecificationForm TypeQSFP28Wavelength1271nm, 1291nm, 1311nm, 1331nmConnectorLC DuplexCable TypeSMFTX Power~-6.5-2.5dBmProtocols100G Ethernet, MSA CompliantMax Data Rate103.1 GbpsMax Cable Distance2kmTransmitter TypeDML CWDMDDM/DOMSupportedReceiver Sensitivity＜-11.5dBmCommercial Temperature Range0℃ to 70℃ (32 to 158°F)