100G optical modules, core solution to high-speed network system

With the rapid development of optical communication in recent years, users have increasing demands for the network. In this condition, 100G optical module has become the hot focus that users care. What is a 100G optical module? This post will give a complete introduction and guide about 100G optical modules.
100G optical modules, core solution to high-speed network system
1. Introduction of 100G optical modules

100G optical module was created to adapt to the trend that network market is developing to 40G and 100G, with a transmission rate of 100G, this module plays a significant role in 100G network system deployment.

2. Technology development of 100G optical modules

Compared with the 2.5G, 10G or 40G wavelength division transmission systems, the 100G optical transmission uses the digital coherent receiver to map all the optical attributes of the optical signal to the electric domain through the phase diversity and the polarization state diversity. Using the mature digital signal processing technology achieve in the electric domain polarization demultiplexing, channel damage equalization compensation, timing recovery, carrier phase estimation, symbol estimation and linear decoding. In the meantime of realizing 100G optical transmission, 100G optical module has undergone a series of major technological changes, including polarization multiplexing phase modulation technology, digital coherent reception technology, third generation super error correction coding technology, etc., thus satisfying the updating demands of users.

3. Category of 100G optical module

Currently available 100G optical modules on the market are CXP optical module, CFP optical module, CFP2 optical module, CFP4 optical module and QSFP28 optical module.
Transmission rate 21×12G 40G/100G 40G/100G 40G/100G 40G/100G 4×25-28G
Application infinite
Ethernet, SONET, OTN Ethernet, SONET,
Ethernet, SONET,
infinite broadband,
yes yes yes yes yes yes
Size(W×L×H/mm) 21×91 82×145×14 41×104×13 34.8×101×11.6 22×92×10 18×52×8.5
12×QRD,infinite broadband 12×QRD,infinite broadband CAUI-4,CAUI CAUI-4,CAUI CPPI-4 CPPI-4
Max power 4x1310nm 3-18W 3-18W - 1.5-6W 3.5W
"C" in the CXP optical module represents 12 in hexadecimal, "X" represents a 10Gbps transmission rate per channel, and "P" means a hot-pluggable device. The CXP optical module is a copper connector system specified by the Wireless Broadband Trade Association and supports 12 10GbE applications for 100Gb, 3 10G link transmissions for 40Gb channels, or 12 10G Ethernet Fiber Channel or 12 × QDR link transmission of Wireless Broadband Signals.

The CFP optical module is designed based on a small pluggable optical module (SFP) interface with a slightly larger size; it can support 100Gbps data transmission. The CFP optical module can support a single 100G signal, OTU4, one or more 40G signals. CFP4 optical module is half the size of the CFP2 optical module and the CFP2 optical module is half the size of CFP optical module, different sizes can meet different demands for the high-density data center; the CFP4 optical module is more suitable for high-density network applications.

QSFP28 optical module due to the small size is also getting more attention. We know that QSFP optical module has four transmitting and receiving ports, QSFP28 optical module and QSFP optical module are designed from the same concept, and each channel transmission rate is up to 28Gbps.

CPAK optical module is a currently popular and new type of 100G optical modules, its appearance is quite similar to the Cisco optical module, and the difference is that its interface is in line with IEEE standards, support to be compatible with other interfaces.

4. Standard of 100G optical module
Standard Customizing
Connector & Fiber type Transmission distance
100GBASE-SR10 IEEE 24-fiber MPO,
parallel multi-mode fiber,
10 receiving & 10 transmitting,850nm
100GBASE-SR4 IEEE 12-fiber MPO,parallel multi-mode fiber,
4 receiving & 4 transmitting,850nm
100GBASE-LR4 IEEE Duplex LC, single-mode fiber,1310nm,4λ×25G WDM Single-mode fiber, 10km
100GBASE-ER4 IEEE 12-fiber MPO, parallel multi-mode fiber, 4 receiving & 4 transmitting, 850nm Single-mode fiber, 40km
100G PSM4 100G PSM4 MSA 12-fiber MPO, parallel single-mode fiber, 4 receiving & 4 transmitting, 1310nm Single-mode fiber, 500m
100G CWDM4 CWDM4 MSA Duplex LC, single-mode fiber,1271-1331nm,4λ×25G CWDM Single-mode fiber, 2km
100G SWDM4 SWDM Industry Alliance Duplex LC, multi-mode fiber,850-950nm,4λ×25G SWDM OM3,TBD WBMMF, 4TBD
100G CLR4 100G CLR4 Industry Alliance Duplex LC, single-mode fiber,1271-1331nm,4λ×25G CWDM Single-mode fiber, 2km

5. Common 100G optical module solutions
Type Description Central
Port Transmission distance
CFP-SR10-100G Huawei CFP-100G-SR10 CFP 850nm MTP/MPO-24 150m
CFP2-LR4-100G Brocade 100G-CFP2-LR4-10KM CFP2 1310nm LC duplex 10km
CFP4-LR4-100G CFP4-LR4-100G CFP4 1310nm LC duplex 10km
QSFP28-SR4-100G Cisco QSFP-100G-SR4-S
850nm MTP/MPO-12 100m


With the rapid development of technology, 100G network applications get closer to us; 100G optical module has become more cost-effective and important for the better network performance. In Fiberland, there is a full range of 100G optical modules provided and also the 100G network solutions offered for you.

SFP+ module,SFP+ transceiver,bidi sfp,XFP module,XFP transceiver Which is good? First choice Fiberland!Thanks for your concern, to learn more about Fiberland, please enter Fiberland website: http://www.fiberlandtec.com/
  • 01
    With the continuous development of 5G communication technology, 100G modules are gradually becoming popular. We know that there are many kinds of packages for 100G optical modules. From 2000 to now, the optical module package types have been rapidly developed. Its main package types are: GBIC, SFP, XENPAK, SNAP12, X2, XFP, SFP+, QSFP/QSFP+, CFP, CXP. In the fast-developing network era, some 100G optical modules avoid the risk of being eliminated, and upgraded and revised with the wave of the Internet, such as 100G CFP optical modules.
  • 01
    1. What is the CWDM SFP? The CWDM optical module is an optical module using CWDM technology to implement the connection between the existing network device and the CWDM multiplexer/demultiplexer. When used with a CWDM multiplexer/demultiplexer, CWDM optical modules can increase network capacity by transmitting multiple data channels with separate optical wavelengths (1270 nm to 1610 nm) on the same single fiber.
  • 01
    AOC is the abbreviation of Active Optical Cables, which is called Active Optical Cables in Chinese. AOC active optical is to encapsulate two optical modules and cable together. Because the medium of transmission in the middle is optical cable, AOC optical module, which contains laser devices, has a higher price for DAC. However, its optical aperture is not exposed, it has high reliability, and its working distance can be customized for a long distance of less than 100 meters.
  • 01
    Dense Wavelength Division Multiplexing (DWDM) technology is capable of transmitting data in an optical fiber using bit wavelength parallel transmission or string line transmission using the wavelength of the laser.It is widely used in different fields of communication networks, including long-distance backbone networks, metropolitan area networks (MANs), residential access networks, and local area networks (LANs).The DWDM optical module is the optical module that uses this technology, so the DWDM optical module has high bandwidth and long-distance transmission characteristics.