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6. Error-correcting codes
The guarantee required by operators of error rates as low as 10 –12 and 10 –15 , depending on the age of the system, is a source of many challenges. Fortunately, powerful error correction algorithms can be used to meet these stringent specifications . Such codes are already ubiquitous in all sectors of the telecommunications world, but have only been available at very high bitrates for a few years. They consist of supplementing binary information with additional bits, calculated from the information, and transmitting them along with the information. The additional bits simply replicate all or part of the useful...
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Error-correcting codes
Law of noise accumulation in a chain of amplified sections
Bibliography
Software tools
Optilux, free software for simulating optical transmission systems http://www.optilux.sourceforge.net/
VPI transmission Maker TM , software suite for the simulation of optical components and systems, published by VPI photonics
Websites
Jean-Michel Jonathan, lecture at Institut d'Optique Graduate School Paris Tech, Guided wave optics – Lightwave http://www.paristech.institutoptique.fr/site.php?id=95=72
Events
Optical Fiber Communications Conference/National Fiber Optic Engineers Conference (OFC/NFOEC), an international conference held annually in the United States. http://www.ofcconference.org
European Conference on Optical Communications (ECOC) is an international conference held every September in a different European country....
Standards and norms
National Telecommunications Union, ITU http://www.itu.int/
- Interfaces for optical transport networks (OTN) http://www.itu.int/rec/T-REC-G.709/fr - ITU-T G.709 -
- Spectral grids for wavelength-division multiplexing applications: DWDM dense grid http://www.itu.int/rec/T-REC-G.694.1/fr - ITU-T G.694.1 -
Regulations
French regulatory authority for electronic communications and posts, ARCEP http://www.arcep.fr/
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Alcatel-Lucent http://www.alcatel-lucent.com
Ciena http://www.ciena.fr/
Cisco Systems http://www.cisco.fr
...
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