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US 5,317,575 AGranted
System for determining birefringent axes in polarization-maintaining optical fiber
AssigneeAlliedSignal Inc.
InventorJohn B. Aniano
Life of this patent
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Abstract
To determine the angular orientation of polarization axes within a length of polarization-maintaining optical fiber, a coherent light source, such as a laser, is focused onto the side of the polarization-maintaining optical fiber and a resultant scattered pattern is generated. A sensor/analyzer monitors the resultant scattered pattern and determines the location of the polarization axes.
Claims5
A method which determines the position of birefringent axes in a polarization maintaining optical fiber, comprising the steps of:
- generating a beam from a coherent light source;
- causing the beam to interact with non-symmetrical glass elements within an optical fiber, thereby scattering light in a pattern;
- sensing the scattered light pattern;
- and
- analyzing the sensed scattered light pattern to determine the position of the birefringent axes of the optical fiber.
2 more elements
Dependencies are inferred from the claim text.