Technique for detecting the status of WDM optical signals
US6480648B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | May 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0283
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A technique for detecting the status of wavelength division multiplexed optical signals is disclosed. In a preferred embodiment, the technique is realized by first splitting an original, multiplexed, polychromatic optical beam into at least two representative, multiplexed, polychromatic optical beams. Next, a first of the at least two representative, multiplexed, polychromatic optical beams is separated according to wavelength into a plurality of optical signal channels, wherein each of the plurality of optical signal channels are for communicating a respective, representative optical signal via a respective, representative, discrete, monochromatic optical beam. Finally, the presence or absence of a representative optical signal is detected on each of the plurality of optical signal channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.