SFP transceiver modules are compact, hot-pluggable optical modules used to transmit data over fiber optic networks. Think of it as the “translator” for your network equipment, converting electrical signals into optical signals. In modern enterprise, data center, telecom, and industrial networks, SFP optical transceivers remain one of the most important components for connecting switches, aggregation routers, Wi-Fi 6E/7 APs, and edge infrastructure. It is also known as a small form-factor pluggable or mini GBIC.