Optical communications systems
US3957343A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1975 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Apr 11, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/073
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Energy propagating in a dielectric optical waveguide may be transferred from one mode of propagation to another by inducing a spatially undulatory variation in refractive index in the core of the dielectric optical waveguide. Such a variation may be induced by an electro-static field. The electro-static field may be directed either longitudinally of, or transversely of the dielectric optical waveguide. A suitably periodic electro-static field may be generated by positioning a suitable electrode structure about the dielectric optical waveguide. For certain applications it may be desirable to arrange for the spatial period of the electro-static field to vary in a random manner. By arranging for propagating modes to couple to non-propagating modes an optical modulator may be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.