Techniques for providing combined signal to multi-mode waveguide photodetector
US12174321B2 · kind B2 · utility
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Key dates
| Filing date | Aug 3, 2023 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Aug 3, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light detection and ranging (LIDAR) apparatus including free space optics to combine a target signal and a local oscillator signal to generate a combined signal. The LIDAR system also includes a set of multi-mode (MM) waveguides and a demultiplexer including a dispersive element. The demultiplexer configured to disperse, via the dispersive element, each respective wavelength of the combined signal at a corresponding angle, and reflect each respective wavelength of the combined signal to a corresponding MM waveguide of the set of MM waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.