TOSLINK
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TOSLINK is a standardized optical fiber connector system. Also known generically as optical audio, its most common use is in consumer audio equipment, where it carries a digital audio stream from components such as CD and DVD players, Digital Audio Tape recorders, computers, and modern video game consoles, to an AV receiver that can decode two channels of uncompressed pulse-code modulated (PCM) audio or compressed 5.1/7.1 surround sound such as Dolby Digital or DTS Surround System. Unlike HDMI, TOSLINK does not have the bandwidth to carry the uncompressed versions of Dolby TrueHD, DTS-HD Master Audio, or more than two channels of PCM audio.
Clear TOSLINK cable with a round connector for S/PDIF connectivity.
TOSLINK connector (JIS F05)
A TOSLINK fiber optic audio cable being illuminated by a laser on the left end
Optical fiber connector
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An optical fiber connector is a device used to link optical fibers, facilitating the efficient transmission of light signals. An optical fiber connector enables quicker connection and disconnection than splicing.
LC (top) and ST (bottom) optical fiber connectors, both with protective caps in place
Image: E2000 Connector
Image: ESCON connector
Image: FCPC 002