Method of tuning an optical device
US5949542A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1999 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Feb 11, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29395
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a tuning method for optical interference devices which comprise at least one plurality of waveguides arranged to produce a preselected phase shift in light transmitted therethrough. The tuning is carried out by irradiating the plurality of waveguides using a source of UV light. The method is faster and more reproducible than other tuning methods known in the art, such as tuning by heat induced dopant diffusion. The method is exemplified by data taken using a Mach-Zehnder interferometer. However, the method is compatible with more sophisticated devices which use integrated waveguides or large numbers of waveguides in the phase changing portion of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.