Bragg grating sensor system with spectral response or code division multiplexing
US6489606B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2000 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Apr 7, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2932
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a sensor system for sensing a parameter, comprising an optical source, coupler and signal processor system in combination with multiple structured fiber Bragg gratings. The optical source, coupler and signal processor system provide an optical source signal to the multiple structured fiber Bragg gratings. The optical source, coupler and signal processor system also responds to multiple structured fiber Bragg grating signals, for providing an optical source, coupler and signal processor system signal containing information about a sensed parameter. The multiple structured fiber Bragg gratings respond to the optical source signal, and further respond to the sensed parameter, for providing the multiple structured fiber Bragg grating signals containing information about a complex superposition of spectral responses or codes related to the sensed parameter. Each of the multiple structured fiber Bragg gratings includes a respective broadband spectral response or code related to the sensed parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.