Hello, everyone!
Today, I want to continue to explain a new topic – ODN engineering and maintenance. Now, I will continue to explain ODN engineering. Today, the topic is indoor cabling routing.
Indoor optical cables can be installed vertically and horizontally. First, the vertical installation of optical cables is done, for that we use tight-buffer optical cables. These are usually riser optical cables. Riser optical cable can be of different capacity, depending on the number of apartments/apartments/offices for which the optical signal needs to be provided. They are usually optical cables with 12 or 24 optical fibers. Vertical optical cables are from the main optical cabinet to each floor optical distribution boxes. There is an optical splitter in the optical cabinet.
The number of optical cabinets and/or optical distribution boxes depends on the architecture of the building. There is usually one optical distribution box per floor. An optical cable is horizontally installed from this box to each apartment/ATB. These usually drop fiber optic cables with 1 or 2 fiber optics.
Cables can be installed in PVC pipes in the wall (typical for new buildings), or in special channels on the wall (typical for old buildings). There are two main reasons why cables are installed in this way, the environment and the prevention of damage to optical cables.
During installation, care must be taken not to damage or bend the optical cables too much, as this will lead to increased attenuation or even complete disconnection of the optical link. Optical fibers or cables can be damaged if more traction is used than allowed. And that should be taken into account. Appropriate lubricants may be used during installation. Some of them can damage the optical cables, so you should check with the optical cable manufacturers before using them. In the picture above, we can see part of the internal installation of optical cables.
After the installation of optical cables is completed, the splicing process begins and after the completion, testing of optical fibers is mandatory. OTDR, VFL, and OPM instruments are used for testing.
This is the end of this article. I will continue to explain this topic in the next article >> ODN Engineering and Maintenance (19).
Thank you!
