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  • What is the use of the FEF function on the fiber media converter?
    What is the use of the FEF function on the fiber media converter?
    • June 01. 2021

    Fiber media converters are usually used in pairs to extend the transmission distance of copper cabling systems. But in the process of using, if one side of the link fails, the other side of the media converter will continue to work, and will not send an error report to the administrator. In this case, fiber media converter with FEF function can perfectly solve this problem. Next, we will introduce...

  • Introduction of 40G BiDi QSFP+ dual fiber bidirectional optical module
    Introduction of 40G BiDi QSFP+ dual fiber bidirectional optical module
    • June 15. 2021

    In 40G short-distance optical network transmission, the conventional optical module solution is to use QSFP-40G-SR4 optical module and 12-core MPO multi-mode OM3 fiber patch cord. Although this solution can realize the upgrade of 10G network to 40G network, it uses MPO branch jumpers to connect 10G equipment and 40G equipment are obviously too expensive, so the industry has given a new optica...

  • Optical fiber test method
    Optical fiber test method
    • July 09. 2021

    Optical fiber testing is divided into primary testing and secondary testing. The primary testing is also the basic testing. It mainly tests the insertion loss (that is, attenuation) of the optical fiber and the length of the optical fiber link. No matter it is single-mode fiber or multi-mode fiber, they are all made of glass fiber, and natural loss will inevitably occur when optical pulse sig...

  • Application of 10G SFP+ optical module in Cisco 550X series switch
    Application of 10G SFP+ optical module in Cisco 550X series switch
    • November 03. 2021

    Cisco 550X series switches are mainly used for the establishment of 10G network for small and medium-sized enterprises. ETU-Link will introduce the optical module solution of Cisco 550X series switches.   Cisco 550X is configured with Ethernet SFP+ slot, which can support 10 Gigabit and Gigabit network transmission rates. The SFP+ slot can select the optical module with the corresponding...

  • Introduction to common types of optical fiber adapters
    Introduction to common types of optical fiber adapters
    • November 27. 2021

    In this blog, ETU-Link will introduce what the fiber optic adapter is. And common types of fiber optic adapters.     Fiber optic adapters, also called flanges, are components that connect fiber-to-fiber or fiber-to-device. They are widely used in telecommunication networks, cable television networks, subscriber loop systems, and optical fiber link connections in regional networks. T...

  • 100G QSFP28 SR4 optical module introduction
    100G QSFP28 SR4 optical module introduction
    • 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...

  • What are the differences between 100G QSFP28 CLR4 and CWDM4 optical modules?
    What are the differences between 100G QSFP28 CLR4 and CWDM4 optical modules?
    • 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, ...

  • What is the difference between single fiber and dual fiber optical module?
    What is the difference between single fiber and dual fiber optical module?
    • December 01. 2022

    In this issue, ETU-LINK will introduce what is a single fiber optical module and a dual fiber optical module, and what are the differences between them. So what are single fiber optical modules and dual fiber optical modules? Single fiber optical module is an optical module product with only one optical fiber port. It can transmit and receive optical signals at the same time by inserting only one ...

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