Live Fiber Identifiers are crucial tools for technicians working with active fiber optic networks. These devices allow non-intrusive identification of live optical fibers by detecting the transmitted optical signals, enabling technicians to verify and label fibers without disrupting the signal flow. This is especially valuable in scenarios with bundled fibers, enhancing operational efficiency by minimizing downtime and eliminating the need for service disruption during identification processes. Live Fiber Identifiers are essential for maintenance, troubleshooting, and installation tasks on operational fiber optic systems, providing a reliable solution for efficient fiber identification.