Spectrographic system utilizing a chirped, pulsed optical source
US9335265B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2014 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | May 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/61
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for measuring the attenuation and dispersion introduced by a sample into an optical signal are disclosed. The apparatus includes a chirped light source, a beam splitter and an optical detector. The beam splitter splits the optical signal generated by the light source into a reference optical signal and a sample optical signal. The sample and reference optical signals are mixed on the detector after the sample optical signal has traversed an experimental sample thus generating a signal having an AC component related to an attenuation and a dispersion introduced by the experimental sample. The optical paths traversed by the reference and sample optical signals between the beam splitter and the detector are chosen such that the reference optical signal and the sample optical signal overlap in time but do not arrive at the optical detector at the same time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.