Dispersive optical systems utilizing transmissive diffraction gratings
US6735362B1 · kind B1 · utility
4Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29383
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The linear dispersion of a dispersive optical system is increased by: (a) employing a transmissive diffraction grating (6) as a dispersive element; and (b) passing light through the grating twice. A reflector (7) is used to achieve the double passage through the grating. The system can be used to disperse light into its composite wavelengths (e g., the system can be a wavelength demultiplexer) or to combine dispersed light at different wavelengths into composite light (e.g., the system can be a wavelength multiplexer). The system can be employed in wavelength division multiplexed (WDM) optical communication systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.