• September 23. 2021

Nowadays, the rapid development of data services has led to an increasing speed of IP network convergence, so network expansion is very important. In the construction of metropolitan area networks, there is a widespread problem of optical fiber shortage. Because metro expansion requires less channel numbers than trunk systems, and the distance is relatively short, optical amplification is not requ...

• September 16. 2021

Optical modules can be classified into single-fiber and dual-fiber according to the number of interfaces. Dual-fiber optical modules have two optical fiber interfaces, and single-fiber optical modules have only one optical fiber interface. In addition to the difference in optical fiber interfaces, the use of the two is also different. Therefore, ETU-LINK will introduce the precautions for the use ...

• September 11. 2021

The previous storage technology only uses the storage device as an auxiliary device of the server. The large-capacity data exchange between servers can only rely on traditional networks, and cannot adapt to the development of IT technology in terms of speed, security, cross-platform sharing, and unlimited expansion. Under such circumstances, SAN technology came into being. Fibre Channel SCSI techn...

• September 09. 2021

As an important part of the optical fiber communication system, the optical module plays the role of photoelectric conversion. But many people don’t know: What are the core components inside an optical module? How do TOSA, ROSA, CDR, LDD, TIA work together? This article explains each component’s function, structure, and working principle to help you fully understand optical module design. 1. What ...

• September 07. 2021

32G Fibre Channel network is the sixth-generation channel technology. In the next 10 years, Fibre Channel will still be the preferred storage protocol for data centers. In this article, ETU-LINK will introduce the 32G SFP28 FC multi-mode（MM) optical module and its application in the data center 32G storage network SAN. 32G SFP28 FC MM optical module (ES2853X-3LCD01) adopts hot-swappable SFP28...

• August 24. 2021

According to the working temperature range, optical modules can be divided into commercial (0℃ - 70℃), expansion (- 20℃ - 85℃), industrial (- 40℃ - 85℃). Generally, only commercial optical module is needed for indoor optical module, but industrial optical module is needed if the optical module is used in outdoor environment with uncertain and fluctuating temperature (such as remote mountain area, ...

• August 17. 2021

Optical modules will go through strict testing and quality inspection procedures before shipment, such as material testing, parameter testing, aging testing, real machine testing, end-face testing, etc. The results of all test items must reach the standard level, otherwise the optical module will be returned to the production line to re-adjust. Understanding these tests will help you distinguish t...

• August 14. 2021

Speaking of PON optical modules, let's first understand what PON is. Generally speaking, PON refers to a passive optical fiber network, which is an important way for broadband access network services to be carried. PON technology originated in 1995. Later, according to the difference between the data link layer and the physical layer, PON technology was gradually subdivided into APON, EPON, and GP...

• August 12. 2021

In recent years, in order to cope with the rapid development of ultra-definition video, cloud storage and cloud computing services, major IT giants and telecom operators around the world are actively preparing to build large data centers. The 10G network can no longer meet the current data transmission needs, and the emergence of the 40G network has greatly eased the pressure on the data center. N...

• August 03. 2021

With the rapid development of the communication industry and data centers at home and abroad, the demand for optical modules has increased sharply. The production capacity of brand original optical modules is limited and the number is small, so the price is relatively expensive and the user's use cost is high. In view of this market phenomenon, many manufacturers of dual capacity optical modules h...