System and method for multiplexing and demultiplexing optical signals using diffraction gratings
US6879749B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2002 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Jun 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2793
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device for demultiplexing an optical signal comprises a grating that receives an optical signal comprising a plurality of wavelength channels, and generates a plurality of spatially separated light beams. Each light beam is associated with a particular wavelength channel. The optical device further comprises an optical element that at least partially compensates a temperature based frequency shift associated with the spatially separated light beams. The optical device further comprises a plurality of lenses and a plurality of fibers. The plurality of lenses are arranged such that a spacing between at least a pair of lenses is determined to at least partially compensate a non-linearity introduced by the grating. Each fiber is associated with a corresponding lens and receives a corresponding light beam. At least one fiber is placed a distance that is less than a focal length associated with its corresponding lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.