The optical splitter is one of the important passive components in the optical fiber link, which mainly plays the role of splitting.
It is generally used in the optical line terminal OLT of the passive optical network and the optical network terminal ONU to realize the optical signal splitting.
The optical splitter distributes the transmitted optical signal in one optical fiber to multiple optical fibers.
There are many distribution forms, 1×2, 1×4, 1×N, or 2×4, M×N. The general architecture of FTTH is: OLT (computer room office end)-ODN (passive optical network distribution system)-ONU (user end), in which the optical splitter is applied in ODN to realize that multiple end users share one PON interface.
In the PON structure, when the distribution of buildings is scattered and irregular, such as the distribution of villas, the distance is far, and the density of users is low, the use of centralized splitting can make full use of resources and cover the surrounding.
Only one optical splitter may be used in a passive optical network, or multiple optical splitters may be used together to split optical signals.