Device for wide-band spectral analysis of a signal of interest
US12392810B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 3, 2021 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Aug 20, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wideband device for the spectral analysis of a signal of interest includes a source designed to generate the signal of interest; an optical splitter element designed to spatially split the signal of interest into a first signal and a second signal; a first frequency-shifting optical cavity comprising a first frequency shifter designed to shift the optical frequency of the first signal by a first frequency f1 per round trip in the first cavity, the first cavity having a first trip time τ1; a second frequency-shifting optical cavity comprising a second frequency shifter designed to shift the optical frequency of the second signal by a second frequency f2 per round trip in the second cavity, the second cavity having a second trip time τ2; the first and the second optical cavity being designed such that a maximum number of round trips of the signal in the first and the second cavity is equal to predetermined N; a detector designed to coherently detect the first signal transmitted by the first cavity and the second signal transmitted by the second cavity and generate a photocurrent proportional to a luminous intensity detected by the detector, an analog low-pass filter designed to fil…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.