What is the application principle of optical fiber transceiver?

Product name: Multi-Ethernet optical transmission equipment Product model: Product function: Physically isolated Ethernet + Ethernet + ~ R/3/data/switch/level, single/multi-mode optional, single/dual fiber Transmission product introduction: -Multi-Ethernet optical transmission equipment is a special equipment specially launched by Tianwei Telecom to meet the needs of public security/power/military private networks. It can transmit independent individual network ports and line speeds on an optical fiber. Network ports, each network port is strictly physically isolated, and multi-channel Ethernet transmission is provided between the center of public security and other private networks to branches and grass-roots units, and multiple sets of independent networks are built, including Gigabit backbone data network, data private network, Conference TV and command information private network, etc., used for Ethernet needs of conference TV, voice, business application systems, Internet (government extranet), dedicated or encrypted channels for business departments.