How to Build A Passive Optical LAN (Local Area Network)

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How to Build A Passive Optical LAN (Local Area Network)

Postby happer » 17 May 2018, 16:40

How to Build A Passive Optical LAN (Local Area Network)

Local area network (LAN) is being widely deployed in the enterprise, university, hospital, army, hotel and places where a group of computers or other devices share the same communication link to a server. Most of the traditional LAN are based on Ethernet copper cable. As more and more devices and cables are adding to the existing copper based LAN, problems come out. Bottlenecks of bandwidth, cabling space, cable infrastructure are limiting the network services. To better organize the local area network and ensure the network performance, passive optical LAN based on optical fibers, also known as POL, is being deployed.

Traditional LAN can no longer satisfy the increasing need for higher bandwidth. Passive optical LAN making advantages of the optical fibers, can provide not only higher bandwidth, but also a lot of other benefits to the local area network. Compared with the copper Ethernet cable, fiber optic cables are lower in weight, higher in bandwidth, better in security and smaller in diameter. What’s more, the passive optical LAN can effectively decrease the power consumption up to 40%. Installers don’t need to worry about the heavy copper cable and can be more flexible during network design. Less equipment and enclosures are required in passive optical LAN. All in all, passive optical LAN is the best alternative to the traditional copper based LAN.
As mentioned, the building of a passive optical local area network requires less equipment. Most of them have low power consumptions compared with the copper based devices. The above picture shows the basic structure of a passive optical LAN illustrating the main components of a passive optical LAN.
Optical Line Terminal (OLT)

The OLT (optical line terminal) deployed in this passive optical LAN deals with both the upstream signals and downstream signals. OLT receives data from service providers and sending the data to ONTs (optical network terminals). It also gets data from the ONTs and sends it to the providers.As most part of passive optical local area network is based on optical fibers, before connecting computers and other devices to the passive optical LAN, the optical signals should be transferred into electrical signals generally. ONTs and optical network units (ONUs) are being added to provide copper interfaces to connect the computers and other devices. Some of the ONUs can also provide Wi-Fi.find a store
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