Multi-mode multi-pass delay
US11635570B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2020 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Jan 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/205
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical delay device includes a multi-mode waveguide for propagating first light through at least a portion of the multi-mode waveguide. The multi-mode waveguide has a first width. The optical delay device also includes a first waveguide having a second width that is less than the first width and a first coupler connected to the multi-mode waveguide and the first waveguide for coupling the first light from the multi-mode waveguide to the first waveguide. The first waveguide includes a first portion connected to the first coupler for receiving the first light from the first coupler; and a second portion connected to the first portion for receiving the first light from the first portion and positioned adjacent to the multi-mode waveguide for coupling of the first light to the multi-mode waveguide as second light so that the second light propagates through at least the portion of the multi-mode waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.