Optical coupler with a waveguide and waveguide index matched materials at an edge of a substrate
US10107960B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2017 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Sep 8, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12176
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device that includes an optical coupler with a waveguide and waveguide index matched materials at an edge of a substrate, and a method of forming the device, is provided herein. The device comprises: a substrate having an edge, and an opening formed therein adjacent the edge; a layer of insulator on the substrate, which forms a bridge across the opening at the edge; a waveguide on the layer of insulator, the waveguide comprising a constant-width region and a tapered region terminating at the edge in a region of the opening; a first layer of optical epoxy in the opening, the optical epoxy indexed matched to the layer of insulator; and, a second layer of the optical epoxy on the tapered region, such that the optical epoxy optically contains an optical signal leaking from the waveguide in the tapered region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.