Waveguide optical modulator
US4128299A · kind A · utility
20Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1977 |
| Grant date | Dec 5, 1978 |
| Priority date | — |
| Expiry date | May 12, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0128
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light propagating in a waveguide is modulated by deforming a cladding on at least one surface of the waveguide. The cladding has a thickness at least equal to the exponential depth of the evanescant field of the propagating light. A pair of electrode means is used to impress a field across the waveguide and cladding so that the cladding is deformed to a degree sufficient to interfere with the evanescant field and to modulate the propagating light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.