Grating structure and optical devices
US6766078B1 · kind B1 · utility
4Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Aug 21, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12107
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical waveguide (1) has a grating structure (2) in which gratings of different orders are superimposed. When first and second order gratings are superimposed, input light is partially reflected by the first order component and partially coupled out of the waveguide by the second order component. The second order component can also be used to couple external light into the waveguide (1). The grating structure (2) has applications to free space couplers, optical sensors, and suppression of ripples in dispersion compensators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.