FTTLA

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FTTLA is the acronym of the English term Fiber To The Last Amplifier (ADC). The network cables being able to use several amplifiers, the FTTLA aims at replacing the coaxial cable to the last amplifier (towards the subscriber) by optical fibre. It acts as a new technology aiming at re-using the network cables existing in particular on the final part while installing of optical fibre more close in proximity to the subscriber while using the coaxial cable of the networks cables for the "last mile" or "last meters" connected with the subscriber.

Fiber to the Last Amplifier (FttLA) Node is an efficient tool to deploy fibre deeper into the CATV network architecture and add most desirable aspects of scalability (performance and reliability) which are necessary when new services (i.e. triple play, video on demand, gaming) are introduced.

FTTLA is a technology which assists hybrid fiber-coaxial CATV networks to provide to their customers more bandwidth. Using a replacement of all coaxial active equipments by NODES (Optical Receiver) with high power output (up to 117 dBuV). The coaxial is maintained from the Node to the Customer without any active equipment in between.

From the optical sender to the Node, it uses fibre which is split by 4 or by 8 depending on the distance and on the output power of the optical sender (from 6 to 16 dBm).

Also, IM2, IM3 and C/N are modified for a better network and it has also others benefits as power saving in the network as the power consumption is lower than a normal HFC Network (up to 40%).

References

Michel Amorin www.bysat.pt

• [1], Michel Amorin

See also

• FTTx
• FTTH
• FTTB
• Numericable
• Très haut débit