Multi-wavelength optical drive/sense readout for resonant microstructures
US5844236A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Jan 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of driving and sensing a resonant sensor network wherein a least a one resonant sensor is driven by a first light from a first light source at a first frequency, wherein said first light source is modulated by an a.c. source. A second light source at a second frequency is utilized sense the resonant frequency of the at least one resonant sensor. Wherein said at least one resonant sensor modulates said second light source. The modulated light is provided to a photo detector and the first light source is filtered out of said reflected light. The detector ac amplifies the filtered reflected light, thereby detecting said the resonant frequency of the resonant sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.