Optimized Y-branch design
US6970625B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2002 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Nov 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/125
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical structures useful in splitters, couplers, combiners, and switches are provided. An example optical structure has a Y-branch configuration that includes a linear taper segment and two branching waveguides. A straight section extends between the linear taper segment and the two branching waveguides to reduce losses during splitting/combining operation. The straight section may be used in Y-branch configurations having a blunt section, as well as configurations without a blunt section. Straight sections formed of a single segment and of multiple segments are shown, and the straight sections may be formed of substantially parallel outer walls or fanning-out outer walls. Further, in some embodiments, the branching waveguides form acute angles at the boundaries with the straight segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.