All-photonic Boolean logic device based on phase change straight waveguide and full binary logic implementation method thereof
US11906876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2021 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jul 22, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosure provides a straight waveguide phase change all-photonic Boolean logic device and a full binary logic implementation method thereof, including a ridge- shape straight waveguide structure, two phase change functional units near the two ends and a Bragg grating between two phase change functional units. The phase change functional units and Bragg grating are situated on the ridge of the waveguide. The write and read optic pulses have different wavelengths. The Bragg grating are designed to reflect the write optical pulse and transmit the read pulse, so that write pulses input from the two ends only act on the phase change functional unit closest to that end, and read pulse can go through the whole device from input end to output end. In terms of the logic implementation method, with three-step write operation, 16 full Boolean logic functions can be implemented in this device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.