Optical Fibre

Optical fibre is a thin, flexible strand made of glass or plastic that transmits data as pulses of light. When data is sent through an optical fibre, a laser or LED light encodes information, which travels through the core by bouncing off the walls, a process called total internal reflection. This allows for high-speed, high-capacity communication over long distances with minimal loss. Optical fibres are widely used in internet cables, telecommunications, and medical instruments because they enable fast, reliable data transfer with enhanced security and less interference compared to traditional metal cables.