kuitukaapelia
Fiber optic cable (kuitukaapeli) is a cable containing one or more optical fibers used to transmit information as light. Each fiber has a central core surrounded by a cladding layer with a lower refractive index, enabling guided light by total internal reflection. Fibers are typically made of glass (silica) or plastic and are protected by jackets and strength members.
Types include single-mode fiber, with a small core (about 8–10 micrometers) optimized for long-distance, high-bandwidth links,
Construction varies by application. A cable may include one or more fibers with protective jackets (PVC or
Transmission and performance: Light is transmitted at near-infrared wavelengths, typically around 850 nm for multimode and
Applications: Telecommunications, internet backbones, data centers, campus networks, cable television distribution, and certain medical systems.
Standards: Specifications for fiber types and cabling are governed by ITU-T and IEC/ISO standards, such as ITU-T