Dynamic gain and channel equalizers
US6888983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Feb 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A beam refraction apparatus includes an input fiber carrying an input beam. A wavelength dispersive element is coupled to the input fiber. The wavelength dispersive element spreads the input beam in at least one dimension as a function of wavelength and generates a dispersed beam. A controllable grating reflects the dispersed beam to the wavelength dispersive element and generates a recombined beam. The controllable grating provides a controllable reflectivity as a function of wavelength. An output fiber receives the recombined beam. A collimating optical member is coupled to the input and output fibers. The collimating optical member passes the input beam and the recombined beams in parallel and opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.