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Abstract

Described is an improved optical fiber cable specially adapted for seismic sensing. Compared with standard optical fiber cable, this improved optical fiber cable is reduced in size, lighter, and more flexible. These characteristics make the optical fiber cable more robust for reusable applications. Due to modifications in the design of the optical fibers, the size and weight of the seismic sensing cable may be substantially reduced. That allows longer lengths of seismic sensing cable, and more seismic sensor boxes, to be reeled on a given sized reel, and makes deployment of the seismic sensing cable faster, easier, and less expensive. A preferred cable design for reaching these objectives comprises multiple optical fibers, of a design just described, encased in a dual-layer optical fiber buffer encasement of acrylate resin.

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First Claim