Wavelength division multiplexing/demultiplexing devices using homogeneous refractive index lenses
US6404945B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1999 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Aug 25, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4246
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved wavelength division multiplexing device is disclosed. The improved wavelength division multiplexing device has a diffraction grating for combining a plurality of monochromatic optical beams into a multiplexed, polychromatic optical beam. The improvement in the improved wavelength division multiplexing device is the use of a homogeneous refractive index collimating/focusing lens for collimating the plurality of monochromatic optical beams traveling along a first direction to the diffraction grating, and for focusing the multiplexed, polychromatic optical beam traveling along a second direction from the diffraction grating, wherein the second direction being substantially opposite the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.