Transient-based channel growth for optical transmission systems
US7327958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2004 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Feb 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0278
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A channel-growth plan for an optical transmission system selects channels such that the transients that result in the channels that survive a network failure, such as an upstream fiber cut, are either minimized or effectively handled by some transient-control technique. In one embodiment, the growth plan may try to keep post-transient surviving channel total power gain equal to the pre-transient total power gain. Alternatively, the growth plan may try to distribute the surviving channels uniformly over the pre-transient channel-frequency range. Other manifestations are to keep (1) the average power of the surviving channels substantially equal to the average power of the pre-transient channels or (2) the average power of the post-transient surviving channels substantially equal to the power level of a specified channel. Transient-control can be balanced with conventional low-cost and high-performance goals to provide an effective hybrid channel-growth plan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.