valokuitutietoliikenne
Valokuitutietoliikenne refers to the use of optical fiber cables for the transmission of data and telecommunications signals. In optical fiber, information is conveyed as pulses of light generated by laser diodes or light‑emitting diodes and detected at the receiving end by photodiodes. The core of the fiber is made of silica glass or plastic, surrounded by cladding with a lower refractive index, which causes total internal reflection and confines the light within the core. Because light propagates with minimal loss and is immune to electromagnetic interference, fiber optics can support very high bandwidth, long‑range, and low‑latency communications.
The concept of fiber optics emerged in the early 20th century, but commercial exploitation began in the
Key applications of valokuitutietoliikenne include telephone networks, broadband internet, cable television distribution, and data communication in