Wavelength sensitive optical devices
US4867522A · kind A · utility
12Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Mar 21, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device for use as an optical filter or modulator comprises an optical waveguide including a portion having a refractive index that varies with optical intensity and a mechanism for providing and directing at least two coherent waves at that portion such that a standing wave of a modulated refractive index is established by interference between the coherent waves. The standing wave provides a temporary modulated index grating in the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.