Codes, methods, and apparatus for optical encoding and decoding

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