There are several types of fiber optic splitters, each with its unique characteristics and applications. Whether you're a network engineer designing a PON (Passive Optical Network) or a homeowner curious about how your fiber connection works. Fiber optic splitter is a passive optical device used to distribute optical signals, which can divide input optical signals into multiple outputs to meet the fiber optic access needs of multiple terminal devices. Conversely, it can also combine multiple signals into one. What Is an Optical Splitter Fiber and Why Do You Need One? At its core, an optical splitter fiber is a device. Splits are most commonly factors of 2, such as 1x2, 1x4, 1x8, 1x16, 1x32, 1x64, etc. More recently, odd split ratios such as 1x3, 1x5, etc have found some use.