PLC splitter is widely used in FTTH network, which is suitable for different transmission wavelength, spectral uniformity, and for multiplex splitting(such as 1×16, 1×32, 1×64, etc.). Having no electronics and power in PLC splitter, it is very cost-effective to provide reliable light distribution solutions. Unlike FBT (fused biconical taper) splitter, PLC splitter has a better performance that offers accurate splits with minimal loss in an efficient package. There are many types of PLC splitters to meet with different needs in OLT and ONT connection and splitting of optical signals over FTTH passive optical networks.
The most common optical splitters deployed in a PON system is a uniform power splitter with a M:N splitting ratio, M means the input ports and N is the number of output ports. It is a point to multipoint fiber optical network. The PON splitting may be achieved by centralized splitting(one-level) or by cascaded splittings (two-level or more).
The centralized splitting mode means that the optical splitters are distributed in the optical fiber distribution box, and the single optical fiber is directly connected to the OLT of the central office, and the other end is connected to multiple ONTs of the user end through multiple optical fibers. A centralized approach typically uses a 1x32 or 1×64 splitter located in a fiber distribution hub.
The cascaded splitting mode means that two sets of optical splitters are connected between the OLT and the ONU by cascading. This splitting method has two splitting levels: a first splitting level and a secondary splitting level. The first-level splitting point is usually located near the central office. 1×4 splitter residing is mostly used. The secondary splitting level is generally installed at the user end (such as inside the corridor). Each of the four fibers leaving this lever 1 splitter is routed to an access terminal that houses a 1x8 level 2 splitter.
With the large-scale construction of FTTH, the market demand for PLC optical splitter as well as OLT and ONU is surging. HSGQ, as manufacturer with strong technical backup, can support all reliable products involving in PON and FTTH networks, such as OLT, ONU, and PLC splitters in competitive price.
PLC Splitter Function in FTTH Network
2022 08/18
Optical splitter plays an important role in passive optical networks (PON). The optical splitter is usually installed between the OLT (Optical line terminal) and the ONT (Optical network terminal). The fiber optical splitter is mainly employed to split the light in to numerous strands,allowing a single PON interface to be shared among many subscribers. It has lots of split ratios, and the most common ones are 1:8, 1:16, 1:32, 1:64, 2:8, 2:16, 2:32 and 2:64.