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Introduction to QSFP28 100G PSM4 Optical Transceiver

QSFP28 100G PSM4 Optical Transceiver Overview

As optical interconnect speeds continue to increase, the 100G optical transceiver is currently experiencing a surge in demand within the data center market. The QSFP28 100G PSM4 optical transceiver is a high-speed, medium-range optical module used in data center environments to enable fast and reliable data transmission. Its use of single-mode fibers and parallel optics technology make it a popular choice for high-bandwidth, intra-data center connections.

How Does QSFP28 100G PSM4 Work?

The QSFP28 100G PSM4 optical transceiver operates through four independent channel, transmitting data at 25Gbps per channel for a total of 100Gbps. On the transmitter side, an electrical signal is converted to optical signals using 1310nm laser sources, with MTP/MPO connectors directing signals into the fibers. The receiver uses photo-detectors to convert optical signals back to electrical form. PSM4's parallel optics technology enables medium distance connection, typically up to 10km, ideal for data centers. It adheres to industry standards, ensuring compatibility and serving as a key component in high-speed data center communications.

Advantages of Using QSFP28 100G PSM4 Optical Transceiver

1. High Data Rate: It offers a high data rate of 100Gbps, providing fast and efficient data transmission, which is crucial for data center and high-performance computing applications.

2. Medium-Range Connectivity: PSM4 technology is designed for medium connections within data centers, making it cost-effective and efficient for intra-rack and intra-data center communication, typically up to 10km.

3. Interoperability: QSFP28 100G PSM4 adheres to industry standards, ensuring compatibility with a wide range of networking equipment, allowing for easy integration into existing setups and reducing the risk of vendor lock-in.

Applications of QSFP28 100G PSM4 Optical Transceiver

The versatility of the QSFP28 100G PSM4 optical transceiver makes it a valuable component in modern, high-speed networking environments, especially in scenarios where medium to long, high-bandwidth communication is essential.

1. Data Center Interconnects: It is commonly used for connecting servers, switches, and routers within data centers, supporting high-speed, high-bandwidth communication critical for cloud computing, virtualization, and big data processing.

2. High-Performance Computing (HPC): In HPC environments, where massive data processing and analysis are required, the QSFP28 100G PSM4 facilitates quick data transfers between computing nodes, improving overall system performance.

3. Storage Area Networks (SANs): For connecting storage devices, such as storage arrays and disk drives, the high data rate and low latency of this transceiver ensure efficient data storage and retrieval.

4. InfiniBand Networks: InfiniBand, a high-speed interconnect technology used in supercomputing and data center applications, benefits from the speed and compatibility of the QSFP28 100G PSM4 transceiver.

QSFP28 100G PSM4 Datasheet

QSFP 100G PSM4 Datasheet

QSFP28 100G 1310nm 2km MPO
(100G PSM4 2KM)

QSFP28 100G PSM4 Cabling and Connectivity

100G to 100G Direct Connection

A 100G to 100G direct connection involves linking two QSFP28 100G PSM4 transceivers directly with single-mode optical fibers and MTP/MPO connectors, enabling high-speed data transfer at a combined rate of 100Gbps between two networking devices.

25G to 100G Migration

25G to 100G migration involves upgrading from 25G to 100G data transfer speeds by replacing the existing 25G transceivers and cabling with QSFP28 100G PSM4 transceivers and associated single-mode optical fibers, enabling a four-fold increase in data throughput.


What does QSFP stand for?

QSFP stands for "Quad Small Form-factor Pluggable Plus 28."

Can the QSFP28 100G PSM4 be used in legacy systems?

Yes, the use of QSFP28 100G PSM4 transceivers in legacy systems depends on the compatibility of the existing hardware and infrastructure with QSFP technology. Compatibility should be verified with the specific legacy system's documentation and requirements.

Is the QSFP28 100G PSM4 suitable for long-distance data transmission?

No, the QSFP28 100G PSM4 is not suitable for long-distance data transmission. It is designed for medium connections, typically up to 10km, within data centers or high-performance computing environments. For long-distance transmission, other optical transceivers with different specifications, such as those using DWDM or coherent optics, would be more appropriate.

How does the QSFP28 100G PSM4 compare to other optical transceivers in terms of speed?

The QSFP28 100G PSM4 is a high-speed optical transceiver with a data rate of 100 gigabits per second (Gbps). In terms of speed, it provides a very high bandwidth suitable for demanding applications.


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