Fiber to the Home
Fiber to the Home (FTTH) is an optical signal delivery format from the central provider to the user area by using optical fiber as a medium. Technological development is inseparable from the growing progress of the optical fiber technology that can replace the use of conventional wiring. There is also a demand to obtain Triple Play Services that provides fast internet access, voice (telephone network, PSTN) and video (cable TV) in one infrastructure for each customer.
Delivery using FTTH technology can save costs resulting in reduced operating costs and provide better service to customers. The inherent characteristics of optical fiber confirmed a greater signal delivery of telecommunications with wider bandwidth than the use of conventional wiring .
From the figure illustrates the general architecture of a FTTH network. Usually the distance between the customer service center and customers can range to a maximum of 20 km. Delivery center service providers (service providers) that is also in the Central Office (CO) houses OLT equipment. Then the OLT is connected to the ONU which is placed in the homes of customers through a fiber optic distribution network (Optical Distribution Network, ODN). Optical cues with wavelength of the 1490 nm downstream and optical signals with a wavelength of 1310 nm upstream is used to send data and voice
While the video service is first converted to optical format with 1550 nm wavelength by video optical transmitter, optical cues 1490 nm and 1550 nm is combined by coupler and transmitted to the customer at the same time. In short, these three wavelengths carry different information simultaneously and in different directions on the same fiber optic cable.