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Where Should Fiber Boxes Be Used in Ftth? – Three Different Fiber Boxes

FTTH (Fiber-to-the-Home), as its name implies, it is a transmission method for optical communications, which brings fiber optical fiber directly from the Central Office (Point) to the end uers (reidential premises, such as home or workplace). 

The FTTH is mainly realized with an Optical Distribution Network (ODN). It is the network between the server room and the end-users’ house. Therefore, ODN provides a transmission system between data center and end users.


As the picture shown above, an ODN is divided into 4 points (from left to right): Central Office, Opitcal Distribution Point, Opitcal Access Point, and End Users. These points are connected by Fiber Optic Cable, which is  the most necessary infrasturcture for it carrys the optical information from data center all the way to every end users. Fiber Optic Cable in FTTH is divided in to Feeder Cable, Distribuiotn Cable, and Drop Cable.

To connect, portect, and distribute these fiber optica cables to every point, we have different fiber boxes to fufill its different requirements. 

Feeder Cable, is the optical fiber cable that betweens ODF to Optical Distribution Point, usually outdoor, so the cable will be facing a lot environmental damage, like when areial mount, it suffers from weather – rain, snow, wind, etc. When direct buried, it suffers soil and other erosion.

This part of ODN will need the Fiber Optic Splice Closure to connect between the cables and protect the connections from all kinds of damage, the closures required here are usually IP68 protection grade.

32 Core Fiber Optic Dome Enclosure with 1*32 PLC Splitter 3 Ports Mini Fiber Optic In-line Closure 2 Ports Mini Fiber Optic In-line Closure  8 Core Horizontal Type Fiber Optic Splice Closure 

Distribution Cable is the cable that between Optical Distribution Point to Optical Access point. The closures uesd in this part of the ODN need more functions than fiber optic splice closure, it requires the ability to distribute more than one optical fibers to different buildings or houses.

We may see cables are tightened and fixed on the wall of buildings sometimes like this:  

In this part of the ODN, we have fiber distribution box to support its need, in this situation, we separate the fiber optic distribution box into two different types – splicing type and patching type.

144FO Distribution Enclosure  Fiber Optic 24 FO Distribution Box 

Drop Cable are located on the subscriber end to connect the terminal of a distribution cable to a subscriber’s premises. They are typically in small diameter, and usually use an Indoor Fiber Termination Box (also known as Floor Box).

Compared to Fiber Optic Splice Closure and Fiber Distribution Boxes, this type of box is usually smaller, lightweight, and beautiful. Usually in white or gray color with telecom operators’ logo on it.

12 Outputs Fiber Optic Floor Terminal Box 8 Cores Indoor Floor Terminal Box 

Finally, Fiber reach your home, but it’s not over yet. Next step the related engineers will working on broadband installation and maintenance, they will pair each optical fibers to the correct houses so that when you purchase their network services they can simply install a modem and a router to put you online.

They will need fiber wall outlet in this step.

Standard Size 86 Fiber Optic Wall Outlet Flat Fiber Optic Wall Outlet configured with 2 Auto Shutter Adaptor

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