Plastic optical fiber is widely used in consumer electronics field as digital audio cables. Digital Audio Connection System was built by Japanese Electronic Industries Association in ***7. The signal is transmitted in digital to analog converter and digital audio such as CD/MD/DAT player and BS tuner at 6Mbps in short distance within 5 meters. Plastic optical fiber is immune to noise and electromagnetic wave, and it promotes high quality sound.

TOSLINK is the abbreviation of Toshiba connection (Toshiba Link),and it is also a standardized connection,which is used in CD,MD by Japanese manufacturers. Toslink uses optical cable to transmit digital audio in various multimedia equipments. Family digital image scheme could be realised by POF, so as the network conncetions of HDTV,digital imaging system, home PC, telephone, sound system. Toslink plays an important role in improving the quality of digital video system.