As people's requirements for the network,it is getting higher and higher, 100G networks have been rapidly developed, and 100G optical transceiver is becoming more and more popular. Currently, there are several types of packages: CFP/CFP2/CFP4, CXP and QSFP28, especially QSFP28 optical transceiver is more common. In addition to the 100G optical transceiver defined by the IEEE standard, the Multi-Source Agreement (MSA) also defines two standards for 100G optical transceiver : PSM4 and CWDM4. This article will give you a detailed introduction to these optical transceiver.

100G PSM4 is a multi-source protocol (MSA), mainly designed for 100G QSFP28 optical transceiver.The 100G PSM4 optical transceiver is mainly used for medium and long distance transmission applications. With MTP interface (8 cores), the transmission distance can reach up to 500m when used with single-mode multi-core fiber.

100G CWDM4 is also a kind of multi-source protocol (MSA). The 100G CWDM4 optical transceiver introduces WDM technology and uses a duplex LC interface. and the transmission distance can reach up to 2km when used with single-mode fiber.

Something in common between 100G PSM4 and CWDM4 optical transceiver

1. Both are 100G 4 channel optical transceiver.

2. Both are multi-source protocols (MSA).

Differences between 100G PSM4 and CWDM4 optical transceiver

From the price of the optical transceiver, the PSM4 optical transceiver is much cheaper, but when the link distance is long, the cost of using the PSM4 optical transceiver will be higher because it need to use 8 single-mode fibers, and the CWDM4 optical transceiver only needs use two single mode fibers.

When choosing these two types, you can according to the actual link length requirements to consider which one is more suitable. ETU-Link supply 100G PSM4 and CWDM4 optical transceiver,we ensure meet the needs of customers, and the quality is guaranteed. For details, welcome visit the website: www.etulinktechnology.com.