Optical frequency controlling device for ultra-dense wavelength-division-multiplexed optical channels
US7369774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2003 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Apr 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/506
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is an optical frequency controlling device for ultra-dense wavelength-division-multiplexed optical channels in which center frequencies of optical channels are aligned. An optical frequency controlling device for ultra-dense wavelength-division-multiplexed optical channels of the present invention comprises an optical channel unit for outputting a plurality of semiconductor laser beams which have different center frequencies, the semiconductor laser beams forming optical channels; an optical detection unit for performing optical detection on the plurality of semiconductor laser beams outputted from the optical channel unit and generating beat frequency signals; a microwave spectrum analyzing unit for outputting spectrum information of the beat frequency signals outputted from the optical detection unit in a digital signal; and a controller for receiving an output signal of the microwave spectrum analyzing unit and controlling the center frequencies of the optical channels of the optical channel unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.