Fourier domain optical coherence tomography employing a swept multi-wavelength laser and a multi-channel receiver
US7391520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2005 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Feb 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/1239
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is an alternative Fourier domain optical coherence system (FD-OCT) and its associated method. The system comprises a swept multi-wavelength laser, an optical interferometer and a multi-channel receiver. By employing a multi-wavelength laser, the sweeping range for each lasing wavelength is substantially reduced as compared to a pure swept single wavelength laser that needs to cover the same overall spectral range. The overall spectral interferogram is divided over the individual channels of the multi-channel receiver and can be re-constructed through processing of the data from each channel detector. In addition to a substantial increase in the speed of each axial scan, the cost of invented FD-OCT system can also be substantially less than that of a pure swept source OCT or a pure spectral domain OCT system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.