Shulou(Shulou.com)06/01 Report--

The transmission of data communication has developed from 40G in previous years to 100G, 200G or even 400G now, and the packaging of optical module has also developed from GBIC to QSFP28 optical module today. It can be said that 100G QSFP28 optical module is the product of this era of big data. And according to authoritative statistics, by 2019, 38% of the world's service providers will deploy 100G networks, which means that the 100G era has arrived.

There are many optical modules on the market, and 100g QSFP28 family products include: 100G QSFP28 optical module, 100G QSFP28 AOC active optical cable, 100G QSFP28 DAC high-speed cable.

Overview of 100g QSFP28 Optical Module

100g QSFP28 optical module first appeared in 2013. After recent years of development, 100G QSFP28 optical module has been derived into several categories, which have different optical module standards and are suitable for different transmission applications.

The QSFP28 optical module provides channels for four different signals, and the transmission rate is increased from 25Gbps to 40Gbps. The size of QSFP28 optical module is smaller than other 100G modules, so it has attracted more and more attention. If you want to deploy a high-density, high-speed network, 100G QSFP28 optical module will be a good choice.

Working principle of 100g QSFP28 Optical Module

To put it simply, the optical module is a photoelectric conversion module. the function of the optical module is to convert the electrical signal of the equipment into an optical signal, so it can spread in the optical fiber and has the advantages that cable propagation does not have, such as transmission distance, transmission rate and so on. after arriving at the destination, the optical signal is converted back to the electrical signal through the optical module for equipment use.

Data connection Scheme of 100g QSFP28 Optical Module

We know that 100G QSFP28 optical module is used in data center, but a 100G QSFP28 optical module alone can not achieve data transmission, in which 100G QSFP28 optical module and jumper must be combined to form 100G QSFP28 AOC or 100G QSFP28 DAC for data transmission. So, how should the 100G QSFP28 optical module and jumper form 100G QSFP28 AOC/DAC in the data connection scheme? How can we choose a cost-effective connection scheme? You can look at the following points:

1. In-rack wiring: 1-5 meters

100g QSFP28 DAC high-speed cables include QSFP28-to-QSFP28 DAC and QSFP28-to-4xSFP28 DAC, both of which are ideal for use within 5m. 100G QSFP28 DAC is an ideal solution to replace 100G optical module for 100G short distance connection. If your 100GbE network is deployed in a 5m rack, 100G QSFP28 DAC passive high-speed cables are perfect for you.

2. Multimode optical fiber cabling between switches: 5-100m

For 100GbE cabling that uses multimode fiber between switches, there are two options. One is to use 100G QSFP28 AOC active optical cable which is most suitable for 3-20 meters. Another option is to use a 100G QSFP28 SR4 optical module and a 12-core MTPOM3/OM4 fiber jumper.

3. Single-mode fiber cabling between switches: > 100m-2km

A distance of more than 100 meters but less than 2 kilometers is usually called a medium distance. For most large data center operators, being able to meet medium-and long-distance 100GbE solutions at low cost is their best choice. 100g PSM4 QSFP28 optical module and 100G CWDM4/CLR4 QSFP28 optical module are suitable for medium and long distance 100G applications.

4. Long mode single mode fiber: ≤ 10km

For ultra-long 100GbE networks, such as connections between two buildings, up to 10 km, the QSFP28-100G-LR4 optical module with a LC duplex interface is the best choice for the IEEE definition and is usually used with single-mode fiber.

The choice of 100G network data connection solution should take into account the cost, actual needs and other aspects, so as to achieve a cost-effective 100G network data connection solution. For 100g QSFP28 products, please go to the official website of easy Tianguang Communication (etulink.com) for more information.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.