• October 24. 2025

In 100G optical communication networks, QSFP28 (Quad Small Form-Factor Pluggable 28) is the mainstream packaging standard. It is key to high-speed interconnection in data centers and telecommunications networks, and directly affects the deployment efficiency of optical modules and network performance. I. Core Design of QSFP28 Packaging 1. Compact size: approximately 18.3mm×56.5mm×8.5mm, only 1/5 o...

• October 21. 2025

With the increasing demand for network bandwidth in scenarios such as 5G base station deployment, data center interconnect (DCI), and high-definition video transmission, 100G optical modules have become the mainstream choice. 100G Single-fiber Optical Modules, with their core advantage of enabling bidirectional transmission over a single fiber, are becoming a key device for conserving fiber resour...

• October 28. 2023

With the increasing demand for data transmission rate in the optical communication market, higher speed optical modules have also emerged. Compared with 10G and 40G wavelength division transmission systems, 100G optical transmission has achieved a series of significant reforms such as polarization multiplexing phase modulation technology, digital coherent reception technology, third-generation ult...

• August 25. 2023

With the continuous development of modern information technology, the demand for information transmission channel capacity by users is also rapidly increasing. Therefore, the market demand for 100G optical modules is constantly increasing, and their proportion in network construction costs is gradually increasing. The mainstream packaging of 100G optical modules mainly includes CFP, CFP2, CFP...

• August 10. 2023

The arrival of the 5G era has brought great opportunities to the optical communication industry, and users have increasingly high requirements for high-speed data transmission. At the same time, it is also driving the upgrade from 100G to 400G. Among 100G optical modules, QSFP28 is the most common type of optical module. So today, let's talk about the difference between the 100G PSM4 and the 100G ...

• July 21. 2023

In this article, ETU-LINK will introduce the 100G QSFP28 and 25G SFP28 cost-effective port branch connection solutions. The following will analyze and compare from the two aspects of saving space and cost. First of all, let's talk about why the cost performance is high, we can judge by comparing the cost. We can assume a scenario with an 8-slot chassis, which is fully equipped with 36 QSFP28 ports...

• June 15. 2023

The development of 100G Ethernet has brought a large market demand for 100G optical modules, among which 100G QSFP28 has become the most popular 100G optical module with it small size and low power consumption. 100G QSFP28 optical modules include SR4, eSE4, PSM4, LR4, CWDM4, ER4, ZR4, etc. In this article, ETU-LINK will focus on 100G QSFP28 LR4 optical modules. LINK) will focus on introducing...

• June 06. 2023

At present, most 100G optical modules in the market are transmitted using 4 -channels 25Gb/s parallel or WDM,such as 100G SR4, 100G PSM4, 100G LR4, 100G CWDM4 optical modules, etc. In order to reduce costs and improve transmission efficiency, the industry has proposed the 100G single-lambda specification, which refers to the use of PAM4 optical signaling and coding for single-lambda 100G tran...