• July 12. 2022

The 100G QSFP28 SR4 optical module has a wavelength of 850 nm and uses a 4-channel 850 nm VCSEL laser array and a PIN photodetector array, and each channel can run at a rate of 25Gbps. The 100G QSFP28 SR4 optical module uses an MPO interface (12 cores) and has a transmission distance of 70m when used with OM3 multimode fiber and 100m when used with OM4 Multimode fiber. The 100G QSFP28 SR...

• July 29. 2022

Communication has existed since the primitive society. Beacon fires and flying pigeons were common communication methods in ancient times. Later, after the industrial revolution, telegraph and telephone appeared. Until the modern optical network, communication technology has been developing continuously. However, the three basic elements to complete the information transmission, namely the source,...

• August 11. 2022

40G QSFP+ optical module refers to the transmission rate of 40G, and the package of this optical module is QSFP+. 40G optical module has four independent full-duplex transceiver channels, each channel of the transceiver rate of 10G, thus forming a 40G transmission rate, ETU LINK Optical Communication (ETU-LINK) will introduce the 40G QSFP + optical module what types are there. IEEE organization fo...

• August 16. 2022

With the continuous surge in data center traffic, the market demand for 100G optical modules is also further increasing. Common 100G optical modules include SR4, LR4, ER4, etc. However, in practical applications, due to the length of the optical fiber link. Several types of optical modules alone cannot meet the most cost-effective optical network transmission solutions in data centers. Therefore, ...

• August 25. 2022

What is OM5 fiber patch cord? Where can it be used? As we know that OM3 and OM4 multimode fibers are mainly used to connect optical modules in the 850nm band. However, with the continuous improvement of the transmission rate of optical modules, since the parallel transmission technology uses multiple single-channel parallel transmissions, more dense fiber cabling is required, management and mainte...

• September 09. 2022

Cisco catalyst ® 9400 series switches are Cisco's main modular enterprise exchange access, distribution and core platform for security, Internet of things and cloud. This series of switches is the basic component of Cisco's leading enterprise architecture sd-access. The platform adopts a chassis architecture that supports up to 9 TBPs system bandwidth, and has a powerful po...

• October 24. 2022

In this blog, ETU-LINK will talk about the 50G SFP56 SR optical module using PAM4 modulation technology. Since the PAM4 signal has four level values, the PAM4 signal can be used in the same physical bandwidth of the channel. Downlink transmission is twice the amount of information compared to NRZ signals, enabling single-channel 50G applications. Therefore, PAM4 signal modulation has become t...

• October 29. 2022

This blog ETU -LINK will take you to read what is WDM, before that we first to get to know why the WDM technology, it appears from the background of the Internet, development rapidly in a short few decades, so operators urgently needs a lot of network capacity to meet growing customer service requirements.   For network expansion, simply increase the transmission capacity linearly by increasi...