Planar waveguide reflective diffraction grating
US7151635B2 · kind B2 · utility
44Cited by
9References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2004 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Feb 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2938
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a planar waveguide reflective diffraction grating for use in an optical device, such as a wavelength division multiplexer, providing an increased bandwidth over conventional planar waveguide reflection diffraction gratings while eliminating the polarization dependent loss (PDL) typically associated therewith. Accordingly, a low order (<3), high aspect ratio (>10) grating is provided with a very short side wall (less than the wavelength of the optical signal) for use with incident angles of less than 15°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.