Joint time-frequency measurement in optical communication
US12284210B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 9, 2023 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Oct 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An endpoint receives a photon signal jointly encoded in time and frequency as a time-frequency state, and separates the photon signal with a dispersive element to generate frequency components. The endpoint delays each corresponding frequency component by a corresponding time delay to separate out the frequency components in time before the endpoint recombines the frequency components to generate a frequency-separated signal. The endpoint measures the frequency-separated signal to determine the time-frequency state of the photon signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.