Codes, methods, and apparatus for optical encoding and decoding
US6313771A · kind A · utility
44Cited by
58References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Nov 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/005
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Encoders and decoders for applying composite codes to optical data signals include encoders and decoders 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 and decoders ("coders") include fiber Bragg gratings configured to encode or decode a subcode, a supercode, or a composite code. By coding with a subcode coder and a supercode coder, a coder is reconfigurable by selecting different subcodes or supercodes. Communication systems and methods using composite codes are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.