What is FTTH? How does it work?

1. What is FTTH?

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The meaning of FTTH is Fiber to the Home, which refers to an application type of optical fiber access that the ONU is installed at the location of family users or enterprises.

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FTTH not only can provide larger bandwidth, but also increases the transparency of data form, speed, wavelength, and protocol loosens the requirements of the environment and power supply and simplifies the maintenance and installation.

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2. What services does FTTH provide?

FTTH is a comprehensive access solution for full services, which enables users to enjoy multiple services at the same time. The major services that FTTH supports include video, data, radio, and multimedia.

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3. What technology does FTTH adopt?

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At present,?GPON and EPON ?are the main technologies of PON. GPON's capacity of supporting multi-services is much stronger and the transmission efficiency is better. Therefore, compared with EPON, GPON costs much more.

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4. How does FTTH work?

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There are two ways to develop FTTH, including Active Optical Network(AON) and Passive Optical Network(PON).

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The transmission distance of AON is long, but it requires highly professional equipment, which isn't suitable for user-intensive areas. Besides, the port cost is relatively high. Moreover, the installation of devices is limited and easy to get influenced by electromagnetic interference, which increases the faults of the network and maintenance costs.

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Because PON is a pure medium network, it has a natural ability to resist the influence of electromagnetic interference. This results in fewer access network faults, higher system reliability, and lower maintenance costs. In addition, FTTH in PON mode supports multiple applications and is fit for expanding the user base in large.

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Therefore, the failure points of the access network are reduced, the system reliability is much higher, and low maintenance costs. At the same time, the FTTH of the passive optical network mode has good transparency, can support the application of multiple standards, and is more suitable for large-scale development of users. The passive optical network has gradually become the mainstream development direction of FTTH.

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5. What devices does FTTH need?

The devices of FTTH uses mainly include Optical Network Terminal(OLT) and Optical Network Unit(ONU). The former is deployed at ISP's office and the latter is placed at the terminal. FTTH involves many industries such as indoor fibering, engineering and application, which makes a difference in the telecom and information industry.