On-chip spectroscopic sensors with optical fringe suppression
US11022542B2 · kind B2 · utility
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5References
12Claims
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Key dates
| Filing date | Jul 5, 2019 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Jul 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/1211
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An on-chip spectroscopic sensor includes a tunable diode laser. A laser driver for drives the tunable diode laser. An analyte test cavity receives a chemical sample and exposes the received chemical sample to light from the tunable diode laser. An optical detector detects light emerging from the analyte test cavity as a result of the laser exposure. A spectral analyzer determines a spectrum of the emerging light, matches and removes one or more known optical fringe patterns from the determined spectrum, and determines a composition or concentration of the chemical sample from the optical fringe pattern-removed spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.