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US 6,665,106 B2Granted
Method for optical polarization control
OwnerReinhold Noeinventor
Life of this patent
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Abstract
The invention specifies a method and apparatus for optical polarization control which enable non-ideal component behavior to be corrected by means of a calibration table. This ensures shorter constructional length, lower operating voltages or higher level functions (ER instead of GSBA).
Claims12
A method for polarization control of an optical signal, comprising:
- converting a polarization of the optical signal using polarization acutuators, with arbitrary, freely and interruption free selectable individual phase angle differences as individual angle coordinates, at least partially into a respective orthogonal,
- which together form a polarization transformer with a total delay and a total phase angle difference as a total angle coordinate between the polarization and a respective orthogonal,
- in which an individual angle coordinate is varied as a function of another angle coordinate, wherein the amount (|dζ1|, |dζ2|, |dζ|, |dζ*(2*i−n−1)/(n−1)|) of the variation (dζ1, dζ2, dζ, dζ*(2*i−n−1)/(n−1)) of an individual angle coordinate is limited for sequences of desired polarization transformations.
Dependencies are inferred from the claim text.