Narrow-band wavelength selective optical coupler
US4737007A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29334
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Narrow band, wavelength selective optical coupling is achieved in a device including first and second optical transmission media and a filter. The first and second optical transmission media are in substantially close proximity of each other in a predetermined interaction region to provide evanescent coupling therebetween. The filter is positioned on the first optical transmission medium in the predetermined region for causing the coupling to be wavelength selective and contradirectional from the first optical transmission means to the second optical transmission means. One exemplary embodiment of the coupler includes optical fibers as the transmission media and a Bragg reflection grating integrally formed on the first transmission medium as the filter. Other embodiments include the use of semiconductor waveguides as the optical transmission media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.