Feedback polarization controller

Details Feedback polarization controller Feedback polarization controller

2005-04-26

2005-04-26

Bovernick, Rodney (Department: 2874)

Optical waveguides

Polarization without modulation

C250S227170, C398S152000

Reexamination Certificate

active

06885782

ABSTRACT:
The invention provides a polarization controller to set the state of polarization (SOP) of light in an optical fiber. A plurality of piezoelectric squeezers couple with an electronic drive to apply compression forces to the fiber. The drive applies voltage signals to the squeezers and monitors one or more of (a) a voltage across the squeezer, (b) a capacitance change with the fiber, (c) a force applied to the squeezer, (d) a force applied to the fiber, and (e) a resonance of one or more squeezers. Feedback from one or more of (a)-(e) is used to modify the applied voltage signals in control of the SOP.

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