Asymmetric Y-branch optical device
US5333219A · kind A · utility
56Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1992 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a new tunable filter which, when used as an intracavity mode selecting filter in a semiconductor laser structure, provides a large tuning range. The disclosed filter is, in one embodiment, a two branch asymmetric Y-branch tunable filter where the ends of the two branches terminate at a common plane. In another embodiment, the invention is realized by using a cascade of two or more Y-branches to place several asymmetrical Y-branch filters in parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.