Wavelength-multiplexed optical controller using a ring architecture
US8571409B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2011 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Nov 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0275
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical ring network for fixed length messages from a plurality of nodes for transmission to different nodes uses a plurality of wavelengths for transmission, and messages for transmission are ordered and arranged on a per-wavelength basis to minimize a transmit finish time. Each node may be operated in an ADM (add drop multiplexer) mode where an optical node removes information on a particular wavelength and adds information on the same particular wavelength, or each node may be operated in a CDC (colorless, directionless, contentionless) mode where information is assigned to a wavelength according to a selection algorithm which may place it on any wavelength without regard to an original node wavelength. The selection algorithm optimizes selection of messages and wavelengths for transmit finish time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.