Did you make the right choice when choosing 100G QSFP28?

Infiberone managerGVIP2018/3/1 14:04:17

Did you make the right choice when choosing 100G QSFP28?


The 100G QSFP28 optical module first appeared in 2013. After recent years, it has become an indispensable product of the 100G network. Compared with CFP, the QSFP28 optical module has the advantages of high port density, low power consumption and low cost.

1. Low power consumption

The power consumption of the QSFP28 optical module usually does not exceed 3.5W, while the power consumption of other 100G optical modules is usually between 6W and 24W. As a result, the power consumption of QSFP28 optical module is much lower than the other 100G optical modules.

2. Low cost

Now the data center is mainly 10G network architecture. Its interconnection solutions are mainly 10GBASE-SR optical module and duplex LC multi-mode optical fiber jumper. If we upgrade directly to 40/100G network on the basis of existing 10G network architecture, it will save a lot of time and cost. Therefore, one of the main interconnect trends of the data center is to upgrade from 10G network to 40/100G network without changing the existing duplex multimode infrastructure network architecture. In this case, the MPO/MTP branch optical cable is an ideal solution to the 10G upgrade to 40/100G.

3. High density

The latest 100G transmission technology is used to provide connection between rack switch and core network for data center, which has increased 150% of the panel bandwidth density compared with the 40GQSFP scheme.

The 100G QSFP28 optical module has now derived a number of types, with different optical module standards and suitable for different transmission applications. The following are the following mainstream QSFP28 products:


100G QSFP28 CWDM4 optical module

The 100G QSFP28 CWDM4 optical module is designed for optical communication applications designed to conform to the QSFP MSA, CWDM4 MSA, and IEEE P802.3bm standards. The module converts 4 input channels of 25Gb/s electronic data into 4 CWDM optical signal channels, and transfers them to a separate channel for 100Gb/s optical transmission. On the contrary, at the receiving end, the module multiplexed the optical input of 100Gb/s to the 4 channels of CWDM optical signal and converted it into electrical data of 4 output channels.

100G CWDM4 is a multi-source protocol (MSA). 100G CWDM4 optical module introduces WDM technology, adopts duplex LC interface, and the transmission distance can reach 2km when combined with single-mode optical fiber. And widely used in CATV (cable TV), FTTH (fiber to the house), 1G and 2G optical fiber channel, Bai Zhaohe Gigabit Ethernet, synchronous optical network SONET OC-3 (155Mbps), OC-12 (622Mbps) and OC-48 (2.488Gbps), security and protection system and other fields.


100G QSFP28 PSM4 optical transceiver module

QSFP28 PSM4 four channel parallel light transmission, support 100G or 40G Ethernet, Infiniband DDR/EDR. Four data channels are integrated in a total of 104 Gbps bandwidth, each channel 26Gbps, the transmission distance can be up to 2 km using G.652 SMF, using the wavelength 1310nm for transmission. The electrical interface uses the 38PIN Edge connector. The optical interface uses a single mode 12 core MTP (MPO) connector.

The 100Gbps PMS4 standard is set by the MSA group. The standard defines a low - cost solution to interconnect long-range data centers. With the further increase in the size of the data center and the increase in the transmission rate of fiber, people need a low-cost scheme that can transmit a distance of less than 500 meters. The 100Gbps PSM4 standard is designed to provide a parallel single mode infrastructure for the service requirements of the next generation data center.


100G QSFP28 LR4 optical module

The 100G QSFP28 LR4 single receiver module is compatible with the 100Gbase-LR4 IEEE 802.3ba standard and OUT4. The single receiver module only supports a 100Gb/s optical signal to enter the 4 channel LAN WDM, and then converts them into a 4 channel electrical signal output. The central wavelength 4LAN-WDM channel 1295.56 nm, 1300.05 nm, 1304.58 and 1309.14 nm, conforms to the IEEE 802.3ba protocol. The 100Gb/s high sensitivity PIN receiver provides superior performance, supporting 100G Ethernet and OUT4 applications for 10 kilometers of link and optical interface IEEE802.3ba 100 Gbase-LR4. The product design and packaging, optical / electrical connection and digital diagnosis interface are based on the QSFP +MSA protocol. The design meets the harshest external operating conditions including temperature, humidity, and EMI interference.


100G QSFP28 SR4 optical transceiver module

100G QSFP28 SR4 optical transceiver module is a four channel, plug and play, parallel optical fiber QSFP+ SR4 100 or 40000 trillion Ethernet, Infiniband FDR/ EDR and 32GFC application optical transceiver module. This transceiver is a high-performance module for short-range multi lane data communication and interconnect applications. It integrates four data channels in each direction with 112.2 Gbps bandwidth. Each channel can reach 28.05 gbps70 m using OM3 fiber or 100m using OM4 fiber. These modules are designed to be used in the multimode optical fiber system with the nominal wavelength of 850nm. The electrical interface uses 38 contact edge types connectors. The optical interface uses 12 optical fiber MTP (MPO) connectors.

100G QSFP28

Interface

Fiber Type

Distance

Standard

100GBASE-SR4 QSFP28

MTP

MMF

70m (OM3); 100m (OM4)

IEEE

100GBASE-LR4 QSFP28

Duplex LC

SMF

10km

IEEE

100Gbase-PSM4 QSFP28

MTP

SMF

2km

MSA

100GBASE-CWDM4 QSFP28

Duplex LC

SMF

2km

MSA

Summary,

The transmission distance of 100G QSFP28 SR4 optical module is 100m, as a member of the new QSFP28 family, is a very ideal solution for the short distance transmission of 100G network. The transmission distance of the 100G QSFP28 SR4 optical module is 10km, which provides an ideal solution for the demand for increasing transmission distance in the super large data center.

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