Unidirectional drop and continue using bidirectional transponder
US7778549B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2004 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Apr 25, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0283
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods for unidirectional communication in an optical network employing bidirectional transponders are provided. The modulation and amplification capabilities of the bidirectional transponder are used to forward information to the next node. In this way a highly cost-effective “drop and continue” architecture is provided. In one implementation, the client-side output of the bidirectional transponder is looped back to the client-side input using, e.g., a Y-cable fiber. In this way, a unidirectional signal present on a network-side input wavelength to the transponder is presented both on a network-side output wavelength of the transponder and at the same time to a client. The modulation and amplification capabilities of the bidirectional transponder are thus exploited in forwarding the unidirectional signal to the next node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.