Optical fiber electro-optical module
US5031984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1990 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Jan 17, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4246
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optical module has at least threee ports, with at least one port having an active electro-optical device for connection to electrical circuitry and at least one port having an optical port for connection to an optical fiber link. A passive coupler interfaces the various ports. The passive coupler is formed of optical fibers mounted on glass using an adhesive that exhibits refractive index-matching characteristics. The fiber-on-glass coupler is extremely small, allowing for the module to have minimal size. The coupler may be wavelength selective or wavelength insensitive. If a wavelength-selective coupler is utilized, the end surface of an optical fiber is coated with a dichroic filter to provide wavelength sensitivity. An optical fiber adapted to receive light for connection to a detector is selected to be a multi-mode fiber to increase reception of light. The remaining fibers may be single-mode fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.