Optical circuit structure for realizing a higher-order node in an optical transmission network
US7835645B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2007 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Mar 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0209
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to an optical circuit structure for realizing a higher-order node in an optical transmission network with a number N of bidirectional remote ports, wherein an optical receive wavelength division multiplexed signal with a set of optical receive channels can be fed to each remote port and wherein an optical transmit wavelength division multiplexed signal with a set of optical transmit channels can be output from each remote. The optical drop channel means and the optical add and cross-connect means include exclusively optical splitter units, optical demultiplexing units, and optical add units, wherein for generating each transmit wavelength division multiplexed signal for a certain remote port, the receive wavelength division multiplexed signals of several or all of the other remote ports are guided as cross-connect wavelength division multiplexed signals toward the certain remote port. Depending on the number of cross-connect wavelength division multiplexed signals, one or more sub-transmit wavelength division multiplexed signals for the certain remote port are generated by means of splitter units, add units, and demultiplexing units, and these are finally comb…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.