100BASEFX
100BASE-FX is a Fast Ethernet standard for transmitting 100 megabits per second over fiber-optic cabling. It is defined in IEEE 802.3u, published in 1995, and describes a point-to-point, full-duplex link that uses two separate fiber strands—one for each direction.
The physical layer of 100BASE-FX typically uses multimode fiber and transceivers operating around 1310 nanometers. Common
Encoding and signaling for 100BASE-FX employ 4B/5B encoding with NRZI signaling, providing robust transmission over fiber.
In network deployments, 100BASE-FX is used to connect devices such as switches, bridges, and network interface
Today, 100BASE-FX has largely been superseded by faster fiber and copper technologies (such as 1000BASE-SX/LX and