• May 26. 2026

I. Core Principles of Wavelength Switching Relying on tunable optical devices and intelligent network management for dual control, seamless wavelength switching can be achieved without replacing hardware or interrupting services, ensuring transmission rate and link stability throughout the entire process. The core formula to remember first is c = f × λ. Since the speed of light c is constant, as t...

• November 11. 2025

Ⅰ. Accelerated Localization of Optical Modules: Triple Drivers of Policy, Technology, and Corporate Practice Driven by the explosive growth of AI computing power and the large-scale application of 5G, optical modules, as a core component of communication infrastructure, are entering a critical window of opportunity for domestic substitution. ETU-Link Technology Co., Ltd. more than a decade of...

• October 17. 2025

In mid-to-high-speed optical communication scenarios, the 25G SFP28 Optical Module has become mainstream due to its characteristic of "balancing speed and cost". ETU-Link has been deeply engaged in this category and has created cost-effective products that are suitable for multiple scenarios, covering core needs such as data centers, enterprise parks, and 5G edge computing. I. Product Features: Co...

• July 08. 2025

In today's rapidly developing information age, data centers and network communications have an increasing demand for high-speed and stable data transmission. As a key component to meet this demand, 25G optical modules have been widely used in the market. Among them, SFP-25G-SR and SFP-25G-ESR in 25G multimode optical modules are two common types. Let's take a closer look at their differences. 1. 2...

• March 26. 2025

In the field of optical communications, the demand for high-speed connections continues to surge , and 100G optical modules have become the core of building intelligent networks. Faced with a variety of models such as SR4/LR4/ER4, how should engineers choose? This article uses 5 major classification dimensions + practical selection solutions to help you overcome the selection difficulties! 1. Pack...

• December 08. 2023

In the 5G network architecture, the front-pass optical module is upgraded from 10G to 25G. This article ETU-LINK will introduce the application of 25G SFP28 optical module in 5G fronthaul. 25G SFP28 dual fiber gray optical module 25G typical dual-fiber gray optical module supports transmission distances of 300 meters and 10 kilometers, 25G SFP28 300meters multimode optical module is main...

• September 01. 2023

The 25G SFP28 optical module is simply an optical module with a transmission rate of 25Gbps, mainly used in 25G Ethernet and 100G (4x25Gbps) Ethernet, which can meet the growing demand of data centers in the most energy-saving way. Therefore, when there is a problem of high cost in optical modules such as 40G and 100G, 25G SFP28 optical modules have become a good solution. In this article, ET...

• July 11. 2023

In generic cabling, MTP / MPO components have strong flexibility, which can realize 72 core optical fiber cabling at most, and 12 core optical fiber distribution box is mainly used for 40G / 100G data center. In 40G data center, 12 core optical fiber distribution box can be used to connect 40G QSFP + SR4 optical module and 10G SFP+ SR optical module; In 100G data center, 12 core optical ...