FTTH

FTTH---1

The 100% optical networks mostly connect the central offices to houses in its conventional concept. In this kind of topology, after the distribution network, we have an optical termination box, which will provide the transition between the distribution cable and the termination cables or “drops”, considering that the latter are forwarded to the optical termination points within the final users’ environment. The last element is the optical cord, which will connect the final equipment unit (ONU) to the termination point.

FTTH Inglês 2

With the evolution of the optical networks for internet, video and telephone services, it is increasingly more common to find hybrid networks with fibers very close to the user’s house.

In the FTTH networks, the fiber gets to the user’s house, thus assuring the band necessary for the growing demand generated by the enormous data and voice traffic via the internet.

For the composition of the FTTH passive networks, Furukawa offers a variety of cables for different applications (aerial, self-supported, underground, etc.): ODFs (Optical Distribution Frames), which are concentrating points within the Central Office; splitters, which enable dividing the PON network and increase the network capillarity; splice closures for the network derivation to be possible and the termination boxes, which encompass the “drop” cables that go to the customers’ houses.

In addition, in the user’s house, there are also optical termination points, where the conversion of the termination network into domestic network is carried out.

With the field connectorization, many advantages are obtained for the FTTH network solutions, considering that it is possible to save in investments in splicing machines, installation time, assuring quality and safety at the same time.

EZ!Lux is a Furukawa solution for pre-terminated networks, in which it is not necessary to perform splices or connectorization in field, because the termination boxes and the Drop cables are already provided with connectors and adaptors from the factory. After the installation of the box with the splitter, it is not necessary to open it for activation at the customer, because the connectors are external and with high protection class, which allows their installation in outdoor environments.

Advantages of the Optical Network

• It fulfills the increasing band demand by the residential users;
• It supports Triple Play (Data, Voice and Video);
• Easy installation of the network and activation of new customers;
• Low attenuation, allowing higher distance between the provider and the final customers;
• Higher quality and stability in data transmission;
• The physical means do not suffer external interference;
• Reducing costs;
• Low maintenance cost.

In a Few Words

The FTTH solution is an architecture of optical transmission network, where the network diverges from one port at the central office (OLT) until reaching each final subscriber’s house individually with one fiber, passing through optical distributors, responsible for the transition of the different modularity of optical cables. These distributors are ODFs, splice closures, termination boxes or even optical termination points, according to the application, which serve the last section already inside the residence.

After the last transition, the signal is made available by a pigtail or optical cord to this subscriber’s optical receiver (ONU).
The success of the GPON networks, broadly used in the FTTH access networks to deliver triple play services (data, voice and video) to residential subscribers, is the optical fiber, which starts from the service provider’s central office and reaches the subscribers’ residences.