Measurements of substances using two different propagation modes of light through a common optical path
US6903820B2 · kind B2 · utility
167Cited by
13References
63Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4792
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This application describes designs, implementations, and techniques for controlling propagation mode or modes of light in a common optical path, which may include one or more waveguides, to sense a sample. As an example, input light in two different optical propagation modes (e.g., the first and second modes) is directed through a common input optical path to the optical probe head which sends a portion of input light in the second mode to the sample. The probe head directs both the light in the first mode and the returned light from the sample in the second mode through a common optical path to a detection module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.