Redundant channel implementation to extend optical transceiver lifetime and reliability
US7801442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Oct 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/032
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments introduce redundant optical channels to significantly extend the lifetime of parallel optical transceivers. A plurality of transmitters, N, transmit on a plurality of optical channels, where N is an integer number of optical channels greater than 1. One or more redundant channels, M, are also provided. N+M multiple input shift registers provide multiple paths for signals from each of the transmitters to connect to N+M laser diodes. In the event up to M of the N+M laser diodes fail, the multiple input shift registers connect the N transmitters to functioning ones of the N+M laser diodes thus extending the life of the device. A corresponding scheme is also described for the receiver side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.