Acceptable splice loss in optical fiber is typically considered to be less than 0. 1. To be able to judge whether a fiber optic cable plant is good, one does a insertion loss test with a light source and power meter and compares that to an estimate of what is a reasonable loss for that cable plant. The estimate, called a "loss budget" is calculated using typical component losses for. One problem I continue to see is unexpected high loss during spicing between exchange-to-exchange network, particularly in the feeder and backbone segments, which can seriously impact the performance of the PON networks. While drop fibers from the splitter to end users often receive less attention. Are you looking for ways to improve the performance of your fiber optic splices? If so, you've come to the right place. Many factors, like core mismatch and contamination, can increase splice loss. Modern fiber optic networks usually keep splice loss. This guide reveals the secrets to fusion splicing with little fluff—just proven, straightforward techniques refined from years of work in the field.