Low-loss signal coupler for optical communications and integrated optics
US4081672A · kind A · utility
14Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Oct 4, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and means for coupling information or signal power into or out of iber optics for integrated optical waveguides. The coupling consists of selectively doping with impurity ions such as rare earth or transition metal ions which are excited to fluorescence within the waveguide by the frequency of the transmitted carrier wave. The fluorescent emission is then detected at right angles to the fiber using conventional photodetectors and amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.