Introduction to the meaning
Fiber to the home: fibertothehome; FTTH, as the name implies, is an optical fiber directly to the home. That is, one of the application types of the optical access network, the optical network unit (ONU) is placed in the user's home.
Classification
FTTH fiber to the home, there are two categories: P2P (pointtopoint) and PON (passive optical network). On the surface, the PON structure can save optical fibers and laser devices. However, because PON is a time-division method, the rate of the device is required to increase with the increase of the PON division ratio. In the case of a relatively large division ratio, a high-speed DFB-LD is required, and the price is that P2P uses a low-speed FP-LD 5-10 times of that, and there are also electronic modules for distance measurement. The cost of the device is high, and the gain is not worth the loss. However, on the other hand, PON can save pipelines and reduce construction, which is more economical and simple. Therefore, more and more PONs are adopted.
In the optical access family, there are FTTB (FiberToTheBuilding) fiber to the building, FTTC (FiberToTheCurb) fiber to the roadside, FTTSA (FiberToTheServiceArea) fiber to the service area and so on.
Advantages and Disadvantages
Connect the optical fiber directly to the user's home. There are no restrictions on the bandwidth, wavelength and transmission technology. It is suitable for introducing various new services and is the most ideal service transparency. The network is the ultimate way for the development of the access network.
Although the mobile communication is developing at an amazing speed, because of its limited bandwidth, the size of the terminal is unlikely to be too large, and the display screen is limited, people still pursue fixed terminals with relatively superior performance, that is, they want to achieve Fiber to the home. The charm of fiber-to-the-home is that it has a great bandwidth, and it is the best solution to solve the bottleneck phenomenon of the last mile from the Internet backbone to the user's desktop.
In the reality of breaking the "last mile" of broadband access, the speed of copper wire-based broadband technology encounters the technical bottleneck of the "ceiling", RS-SUNNET has launched 100M and Gigabit optical fiber network cards, Realize the application of 100M and Gigabit fiber to the desktop, such as ultra-fast network speed and ultra-high-speed network requirements for storing, downloading, and sending data, which greatly improves the speed of users' work and life, and optimizes People's network environment has realized the optimization and upgrading of people's network life.
Function
"Light advances and retreats" is a technological update and a complete revolution in broadband access networks. In order to promote the commercial, civilian and popularization of "Fiber to the Home", telecommunications companies must upgrade broadband networks, operation and maintenance systems as a whole. This is a complex system engineering.
The country’s broadband strategy will help my country concentrate its superior resources and overcome technical problems in the field of optical communications. Broadband acceleration relies on technological upgrading, and broadband access networks are becoming fiber-optic. It has become a global consensus. In terms of key technology innovation, optical network construction and promotion, RS-SUNNET has launched high-quality 100M fiber optic network cards and Gigabit fiber optic network cards, which provide solutions for users' fiber to the home and fiber to the desktop, and are consistent with users. Praise.