100G QSFP28 2km PSM4 Transceivers丨C-LIGHT

100G QSFP28 PSM4 2KM Transceiver is a parallel single-mode fiber module compliant with PSM4 MSA and IEEE 802.3bm standards. It delivers 100Gbps data transmission over 4×25G NRZ lanes using 1310nm wavelength across four independent fibers, achieving a 2km reach via MPO-12/MTP® connectors

Product Features:

100G-QSFP28-2km-PSM4-Transceivers ●MPO12 optical interface

●Maximum link length up to 2km

●Up to 25.78125Gb/s data links per lane

●+3.3 V power supply

●QSFP MSA compliant package

●High performance singal mode DML transmitter

●High sensitivity PIN/TIA optical receiver

●Single Mode operation

●BER < 5E-5@-10.5dBm（OMA）

●Built-in CDR

●Case Operating temperature: 0 to 70ºC

●Data and Control Interfaces

●Tx Data CML/AC Coupled

●Rx Data CML/AC Coupled

●ModSelL LVTTL

●ResetL LVTTL

●ModPrsL LVTTL

●LPMode LVTTL

●2-wire I2C communication bus

●RoHS 6 compliance

Applications

●Data Center Interconnect (DCI)

●Enterprise Core and Aggregation Networks

●High-Performance Computing (HPC) and InfiniBand EDR Interconnects

●Metropolitan Network Backbones and 5G Fronthaul/Midhaul

●Cloud Service Provider (CSP) Infrastructure

Data Sheet

100G QSFP28 2km PSM4 Transceivers.pdf

100G QSFP28 PSM4 2km Transceiver FAQ

Q1: What is a 100G QSFP28 PSM4 2km transceiver?

A 100G QSFP28 PSM4 2km transceiver is a hot-pluggable optical module designed for 100GbE transmission over parallel single-mode fiber (PSM4). It delivers 100Gbps connectivity up to 2km using an MPO-12 interface.

Key features include:

100Gbps data rate
PSM4 parallel optics
Up to 2km over SMF
MPO-12 APC connector
QSFP28 hot-pluggable form factor

It is ideal for AI data centers, cloud computing, HPC, and enterprise networks.

Q2: How does a 100G QSFP28 PSM4 transceiver work?

The module converts electrical signals into 4×25G NRZ optical channels, transmitting them over four parallel single-mode fiber pairs through an MPO-12 connector. This parallel architecture provides high bandwidth with low latency for short- to medium-distance links.

Q3: What are the key features of the C-LIGHT 100G QSFP28 PSM4 2km transceiver?

The C-LIGHT module is designed for reliable high-density 100G networking.

Key features include:

100Gbps Ethernet transmission
Up to 2km over SMF
4×25G NRZ channels
MPO-12 APC interface
QSFP28 MSA compliant
Digital Diagnostic Monitoring (DDM)
Power consumption <3.5W

These features provide stable and efficient optical connectivity for modern data centers.

Q4: What are the advantages of a 100G QSFP28 PSM4 transceiver?

Compared with duplex-fiber solutions, it offers:

Parallel single-mode transmission
Up to 2km reach
High port density
Low power consumption
Cost-effective deployment where MPO fiber is available

It is an efficient solution for high-speed data center interconnects.

Q5: Where are 100G QSFP28 PSM4 transceivers commonly used?

These modules are widely deployed in high-speed optical networks.

Typical applications include:

AI data centers
Cloud computing
High-Performance Computing (HPC)
Spine-Leaf architectures
Switch-to-switch links
Enterprise data centers

These applications require reliable 100Gbps transmission over distances up to 2km.

Q6: Why choose a 100G QSFP28 PSM4 instead of a 100G CWDM4 module?

A 100G PSM4 module uses parallel single-mode fiber with an MPO connector, while a 100G CWDM4 module transmits over duplex LC fiber using wavelength multiplexing.

Its advantages include: