Photonic sensor using a fixed-wavelength laser
US11940386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2022 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Sep 6, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7789
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor architecture that uses fixed wavelength light and tunes a wavelength dependent response of a sensor may be used for detecting analytes in a wide range of applications. The sensor architecture is based on optical resonators or interferometers comprising optical waveguides. A resonance wavelength and/or transmission/reflection spectrum are affected by presence of an analyte adsorbed on a surface of the waveguide, and a setting of a phase modulator. The sensors include a sensor portion where part of the waveguide is exposed to a sample for sensing, and a phase modulator part. The phase modulator part may include a heater that is controlled to tune, or sweep, or modulate the resonant wavelength and/or spectrum of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.