Beam delivery apparatus and method for interferometry using rotatable polarization chucks
US5648848A · kind A · utility
5Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Feb 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2290/45
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of providing a beam having precisely orthogonally polarized components includes generating a beam with substantially orthogonally polarized components, splitting the beam to separate the components to separate paths, projecting each component into a respective polarization preserving optical fiber (PPF) or polarizing fiber, recombining the components output from the fibers into a single beam, and transmitting the single beam to an interferometer. The PPFs are rotationally adjustable at their output ends to provide precise orthogonality in the resulting beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.