Merging optical waveguides having branch angle within a specific range
US6243516A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Feb 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12109
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide device having a folded waveguide structure on a semiconductor substrate. The optical waveguide device includes first and second single mode optical waveguides formed on a semiconductor substrate. The first and second optical waveguides merge together into a merging optical waveguide. A reflector is positioned so that light travelling through the first optical waveguide into the merging optical waveguide is reflected by the reflector to travel through the second optical waveguide. A total reflection complementary angle for the light traveling through the first optical waveguide is .theta..sub.c, and a branch angle .theta..sub.b of the first and second optical waveguides is less than or equal to 0.55.theta..sub.c.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.