Optical Ti-diffused LiNbO.sub.3 waveguide device and method of manufacturing same
US5991489A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide device includes an LiNbO.sub.3 substrate and an optical waveguide disposed on the LiNbO.sub.3 substrate by diffusing Ti therein. The LiNbO.sub.3 substrate has a step on a surface thereof which corresponds to the area in which Ti is diffused. The step has opposite side edges and a central area therebetween, the side edges having a height greater than a height of the central area, whereby the side edges are raised higher than the central area. The optical waveguide device has a relatively small coupling loss with respect to an optical fiber having a small light beam mode shape, thus eliminating optical device loss faults.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.