Splitting ratio of fiber optic splitters

A split ratio describes how many output ports a splitter has, and how evenly the input optical power is distributed across those ports. For example, a 1:32 splitter takes 1 input signal and splits it into 32 equal (or nearly equal) output signals. By dividing a single optical signal from a central Optical Line Terminal (OLT) into multiple outputs for Optical Network Terminals (ONTs) at users' homes, splitters eliminate the need for dedicated fibers to each residence—slashing infrastructure costs while scaling network reach. This guide. For every 2X increase in split ratio, power is reduced by roughly 3 dB. Bandwidth is shared amongst customers in a PON, and the bandwidth received by a customer is not. Optical splitters, encompassing FBT (Fused Biconical Taper) couplers and PLC (Planar Lightwave Circuit) splitters, are prevalent passive optical devices designed to divide fiber optic light into multiple segments based on a specified ratio. Let's dive into the key considerations. A key challenge is determining how many users a single OLT port can support, which is defined by the split ratio. Traditional GPON networks often employ 1:32 or 1:64 splits.