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    • By Admin / 11 Oct 22 / 0 Comments

      LAN medium access control method

      How to access and control different computer devices through media in the LAN is preliminarily understood as follows. A long time ago, Ethernet was used to connect all lines of home computers to the bus to realize the mutual communication of computers. When using this method to send data, you nee...
      LAN medium access control method
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    • By Admin / 10 Oct 22 / 0 Comments

      Temperature, Rate, Voltage, Transmitter, and Receiver of Optical Module

      1、 Operating temperature The operating temperature of the optical module. Here, the temperature refers to the housing temperature. There are three operating temperatures of the optical module, commercial temperature: 0-70 ℃; Industrial temperature: – 40 ℃ – 85 ℃; There is also an exp...
      Temperature, Rate, Voltage, Transmitter, and Receiver of Optical Module
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    • By Admin / 09 Oct 22 / 0 Comments

      What is Diode? [Explained]

      The Diode is composed of a PN junction, and the photodiode can convert the optical signal into an electrical signal, as shown below:     Usually, the covalent bond is ionized when the PN junction is illuminated with light. This creates holes and electron pairs. The photocurrent is generated due t...
      What is Diode?  [Explained]
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    • By Admin / 08 Oct 22 / 0 Comments

      Preliminary Understanding of LAN

      LAN is the most popular one we use today. What is LAN?  A Local Area Network (LAN) refers to a group of computers interconnected by multiple computers in a certain area using a broadcast channel. The more there are in this area, the more devices that can communicate with each other. And only the ...
      Preliminary Understanding of LAN
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    • By Admin / 29 Sep 22 / 0 Comments

      What is an Ethernet switch and how does it is work?

      With the rapid development of computers and their interconnection technology (also known as “network technology”), Ethernet has become the short-range two-layer computer network with the highest penetration rate so far. The core component of Ethernet is the Ethernet switch. Manual and...
      What is an Ethernet switch and how does it is work?
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    • By Admin / 28 Sep 22 / 0 Comments

      What is VCSEL laser?

      VCSEL, which is called a Vertical Cavity Surface Emitting Laser in full, is a kind of semiconductor laser. Currently, most VCSELs are based on GaAs semiconductors, and the emission wavelength is mainly in the infrared wave band. In 1977, Professor Ika Kenichi of Tokyo University of Technology fir...
      What is VCSEL laser?
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