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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.

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.

100G-optical-modules

Module

CXP

CFP

CFP2

CFP4

CFP2

QSFP28

Transmission rate

21×12G

40G/100G

40G/100G

40G/100G

40G/100G

4×25-28G

Application

infinite

broadband

Ethernet

Ethernet,

SONET,

OTN

Ethernet, SONET, OTN

Ethernet, SONET,

OTN

Ethernet, SONET,

OTN

infinite broadband

Ethernet

Hot-

pluggable

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

Electric

port

12×QRDinfinite broadband

12×QRDinfinite broadband

CAUI-4CAUI

CAUI-4CAUI

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

institution

Connector & Fiber type

Transmission distance

100GBASE-SR10

IEEE

24-fiber MPO,

parallel multi-mode fiber,

10 receiving & 10 transmitting850nm

OM3100m

OM4150m

100GBASE-SR4

IEEE

12-fiber MPOparallel multi-mode fiber,

4 receiving & 4 transmitting850nm

OM4100m

100GBASE-LR4

IEEE

Duplex LC, single-mode fiber1310nm4λ×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,1271-1331nm4λ×25G CWDM

Single-mode fiber, 2km

100G SWDM4

SWDM Industry Alliance

Duplex LC, multi-mode fiber,850-950nm4λ×25G SWDM

OM3TBD WBMMF, 4TBD

100G CLR4

100G CLR4 Industry Alliance

Duplex LC, single-mode fiber,1271-1331nm4λ×25G CWDM

Single-mode fiber, 2km

5. Common 100G optical module solutions

Type

Description

Central

wavelength

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

QSFP28

850nm

MTP/MPO-12

100m

Conclusion

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 Cozlink, there is a full range of 100G optical modules provided and also the 100G network solutions offered for you.


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