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2. Parameters affecting transmission quality
2.1 FEC Q limit
The transmission quality required by the user is high, as the submarine links constitute the main transmission arteries that then feed the terrestrial links to the subscriber:
The quality of the digital signal delivered by a submarine link must be such that the error rate is less than 10- 13 , i.e. Q greater than 17.3 dB.
However, the introduction of Forward Error Correction (FEC) codes in submarine link terminals significantly lowers the level of transmission quality required at the output of the submarine link.
The minimum Q factor required before correction to obtain Q = 17.3 dB after correction is called Q FEC ...
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Parameters affecting transmission quality
Transmission capacity by fiber type
Bibliography
Conferences
Proceedings of SubOptic 2001, Kyoto, May 20-24, 2001
Proceedings of SubOptic 2004, Monaco, 29 mars-1 er avril 2004
Proceedings of SubOptic 2007, Baltimore, May 14-17, 2007
Proceedings of SubOptic 2010, Yokohama, May 11-14, 2010
Proceedings of SubOptic 2013, Paris, April 22-25, 2013...
Standards and norms
ITU (International Telecommunication Union) recommendations for fiber optic submarine cables :
- General features of optical fibre submarine cable systems - G971 -
- Definition of terms relevant to optical fiber submarine cable systems - G972 -
- Characteristics of repeaterless optical fiber submarine cable systems - G973 -
- Longitudinally compatible DWDM applications for repeaterless...
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