Systems for passive optical correction of polarization leakages
AssigneeKeysight Technologies, Inc.
InventorClay Schluchter
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Abstract
Passive optical systems and methods for improving polarization of an optical reference beam are disclosed. For example, an optical system includes first and second quarter wavelength plates (QWPs) positioned in a beam path of the optical system. The second QWP is positioned in the beam path such that a fast axis of the second QWP is substantially orthogonal to a fast axis of the first QWP. First and second polarization elements are also positioned in the beam path. The first and second polarization elements are each configured to provide both diattenuation and retardance of the optical reference beam.
Claims20
An optical system for improving polarization of an optical reference beam, the optical system comprising:
- a first quarter wavelength plate (QWP) positioned in a beam path of the optical system;
- a first polarization element positioned in the beam path, the first polarization element being configured to provide diattenuation and retardance of the optical reference beam;
- a second QWP positioned in the beam path such that a fast axis of the second QWP is substantially orthogonal to a fast axis of the first QWP;
- and
- a second polarization element positioned in the beam path, the second polarization element being configured to provide diattenuation and retardance of the optical reference beam.
Dependencies are inferred from the claim text.