Codes, methods, and apparatus for optical encoding and decoding

Details Codes, methods, and apparatus for optical encoding and decoding Codes, methods, and apparatus for optical encoding and decoding

H - Electricity

03

M

H03M 13/29 (2006.01) H04B 10/02 (2006.01) H04J 14/00 (2006.01) H04Q 11/00 (2006.01) G02B 6/34 (2006.01) H04J 13/00 (2006.01)

Patent

CA 2351713

Encoders and decoders for applying composite codes to optical data signals include encoders (211, 231) and decoders (243, 261) for applying both subcodes and supercodes. The subcodes have a duration selected as less than or equal to an interchip duration or a chip duration of the supercodes. The encoders (211, 231) and decoders (243, 261) ("coders") include fiber Bragg gratings configured to encode or decode a subcode, a supercode, or a composite code. By coding with a subcode coder, a coder is reconfigurable by selecting different subcodes or supercodes. Communication systems and methods using composite codes are also described.

L'invention concerne des codeurs et des décodeurs permettant un codage composites de signaux de données optiques. Ces codeurs (211, 231) et décodeurs (243, 261) appliquent des sous-codes et des supercodes. Les sous-codes sont choisis de manière à présenter une durée inférieure à la durée inter-circuits ou intra circuit des supercodes. Les codeurs (211, 231) et les décodeurs (243, 261) ("codeurs") comprennent des réseaux de Bragg à fibre configurés de manière à pouvoir coder et décoder un sous-code, un supercode ou un code composite. En utilisant un codeur de sous-code et un codeur de supercode on peut reconfigurer un codeur en sélectionnant différents sous-codes et supercodes. L'invention concerne également des systèmes et des procédés de communication utilisant des codes composites.

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