Fiber optic splitters are devices used in fiber optic networks to divide a single optical signal into multiple signals. This allows one source of light to be distributed to several different locations, making it efficient for connecting multiple users to a single fiber optic line. These splitters are essential for applications like telecommunications and internet services, where they help manage data flow. By using a splitter, service providers can deliver high-speed internet and other services to many customers without needing separate lines for each one, thus reducing costs and infrastructure requirements.