• 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 14. 2021

In this article, ETU-LINK will introduce to you, what is the difference between active optical cable(AOC) and direct attach cable(DAC)? First, the AOC is composed of integrated optoelectronic devices. The signal transmission process is that the A terminal module converts the electrical signal into an optical signal, the optical signal is transmitted to the B terminal module by an optical fiber pat...

• 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. In this article, ETU-LINK will introduce to you what are the core components of the optical module? 1. TOSA: Its main function is to convert electrical signals to optical signals, including lasers, MPD, TEC, isolator, Mux, coupling lenses and other devices, including ...

• 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...

• September 03. 2021

In the establishment of a 10G network, we will face a choice, that is, whether we choose optical fiber cabling or copper cabling. Optical fiber cabling systems are divided into multi-mode（MM) optical fiber cabling systems and single-mode(SM) optical fiber cabling systems, among which 10G MM optical fiber cabling systems need to use 10G SFP+ MM optical modules, 10G AOC active optical...

• August 31. 2021

In this article, ETU-LINK will explain several problems that may occur after the optical fiber test is passed and the corresponding detailed analysis. (1) Why does the optical fiber test pass, but the packet is still lost when the network is running? In the standard selection, many users will make some obvious mistakes, such as not paying attention to whether the tested fiber is 50/125μm (OM2, OM3...

• August 28. 2021

Fiber patch cords are widely used in the field of optical communications and optoelectronics. Insertion loss and return loss are two important indicators of fiber patch cords. Insertion loss will weaken the optical power in the optical link and reduce receiving sensitivity, while return loss will change the spectral width of the laser diode of the light source, introduce noise to the sys...

• August 26. 2021

Nowadays, video surveillance systems have become one of the indispensable infrastructures in all walks of life. With the popularization of high-definition and intelligent applications of video surveillance cameras, the requirements for video transmission signal quality, stream bandwidth and transmission distance have been improved. ETU-LINK will introduce to you today the use of PoE media converte...

• 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 19. 2021

NAS storage network is a solution to meet the low-cost storage needs of small and medium-sized enterprises. Among them, NAS storage refers to network-attached storage, which is a device for storing data. It takes data as the center, completely separates storage devices and servers, and centrally manages data, thereby freeing up bandwidth, improving performance, reducing total cost of ownership, an...

• 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...