Enter the optical input power, additional loss, and select a PLC splitter or tap ratio to estimate the output power (in dBm) on each branch. Enter your input power and pick a splitter — get the per-port output in dBm and mW. Covers GPON (1490 nm / 1310 nm), EPON, and RF video overlay (1550 nm). In fiber optics, a “ratio” is commonly used to describe how a splitter or. Calculating splitter loss in optical fibers is essential for designing efficient optical networks. This is a single-direction budget estimate; downstream and upstream wavelengths or optical classes may. Note: Adjust the additional loss as needed. If you encounter any errors or have suggestions, you can contact me on Instagram.