Hello, everyone!
Today, I want to continue to explain a new topic – ODN engineering and maintenance. Now, I will explain the main elements of the ODN network. Today, it is connecting devices.
As I mentioned in the fifth article about you, optical fibers can be connected in one of three ways: fusion splice, mechanical splice or optical connectors. Accommodation is required for either of these three modes.
In data centers, headends/COs optical splices and optical connector pairs are housed in the ODF cabinet and ODF subrack. We see that in the pictures below, on the left.
Different variants of optical closures, cabinets and boxes are used in outdoor applications. Optical closure is most commonly used for fusion splicing, in feeder and distribution optical cables. The main task of optical closures is the protection of optical splices. They differ in capacity and application. They can only be for the accommodation of optical fusion splices, or for the accommodation of splices and optical connectors or also for splices, connectors and optical splitters. I can be vertical or horizontal. They can be used for aerial, underground, underwater and direct buried installation scenarios.
A similar story is for outdoor optical cabinets and boxes. The main task of the optical cabinets and boxes are the protection of optical fibers, fusion splices, storage of optical splitters, the ability to connect users and check and measure optical fibers and parameters. They can be indoor or outdoor variants. Also, they can be pole-mounting or wall-mounting solutions.
There are the following variants of street optical cabinets and optical boxes:
FTD (Fiber Distribution Terminal). Used in outdoor scenarios.
FAT (Fiber Access Terminal). Used in outdoor scenarios. It can be installed on a pole or wall. This is where the optical splitters are located. They are used to connect users. And,
ATB (Access Terminal Box). This is where the drop optical cable ends. It's the last optical box. It is located at the user's side.
This is the end of this article. I will explain this topic in the next article >> ODN Engineering and Maintenance (8).
Thank you!
