Extended Reach Ring Interferometer with Signal Antifading Topology for Event Detection, Location and Characterization
AssigneeHuvr, Inc
InventorZbigniew Sobolewski
Life of this patent
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Abstract
An optical fiber ring interferometer is provided, which is based on a common light path for two or more light beam pairs preferably originated from two or more light sources of a substantially different spectrum or from a single light source split spectrum and whereas each light beam of a specific pair is propagating in relative opposite directions, wherein at least one pair of light beams is utilized to detect acousto-mechanical events and to provide information regarding location and other characteristics of detected environmental disturbance.
Claims6
A fiberoptic ring interferometer system comprising a light source, a plurality of light detectors, a plurality of light beam splitters, a plurality of reference coils, a plurality of light depolarizers and at least two independent fiberoptic sensing extensions contained in a single multi-fiber optical cable, the system being configured such that a split portion of a light beam from the light source can travel through one of the plurality of the reference coils, one of the at least two independent fiberoptic sensing extensions, and through one of the plurality of light depolarizers, and then to one of the plurality of light detectors.
Dependencies are inferred from the claim text.