Optical fiber sensor
AssigneePhotonetics
InventorsHerve Arditty, Francois-Xavier Desforges, Luc Jeunhomme
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Abstract
In an optical fiber sensor, the fiber has a sensitive zone which cooperates with a retroreflecting surface through the agency of an optical couplant. The function of the retroreflecting surface is to return into the optical fiber all light losses which escape from the fiber in the sensitive zone.
Claims11
In an optical fiber sensor comprising an optical fiber for transmitting light from an emission source to a sensitive zone of said fiber and means for receiving echo light signals from said sensitive zone, the improvement wherein said sensitive zone comprises at least one loss-inducing fiber bend, and wherein said sensor further comprises a retroreflecting surface in optical coupling relationship with said fiber bend for returning, back into said light signals, light losses escaping from said fiber in said sensitive zone.
Dependencies are inferred from the claim text.