Apparatus for launching or detecting waves of selected modes in an optical dielectric waveguide
US4125768A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1977 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | Nov 3, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4287
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A launcher for waves of selected mode in an optical dielectric waveguide having a core surrounded by cladding, in which the launcher includes a prism of refractive index greater than that of the waveguide and preferably greater than that of the core of the waveguide which is placed against the waveguide either before or alongside an outwardly tapering portion of the waveguide. Light from a laser is directed through the prism on to the waveguide to induce the waves in the waveguide. A matching fluid, which may set to a solid, improved the coupling of the prism to the waveguide. A detector of similar construction is also described, the tapering of the waveguide being inward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.