Method and system for producing a coated fiber bragg grating optical fiber
AssigneeBaker Hughes Incorporated
InventorsDaniel S. Homa, Christopher H. Lambert, Ajit Balagopal, Robert M. Harman
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Abstract
A method of producing a coated FBG optical fiber involves coating the optical fiber prior to writing the Bragg grating. A system for producing the coated FBG optical fibers includes a high temperature furnace from which to draw the fiber, a coating applicator that may be a carbon coating applicator, a cooling station, and a grating writing station.
Claims16
A method of producing a coated fiber Bragg grating (FBG) optical fiber, the method comprising:
- drawing fiber from a high temperature furnace;
- coating the fiber;
- and
- writing a Bragg grating on the coated fiber to produce the coated FBG optical fiber.
A coated fiber Bragg grating (FBG) optical fiber produced by a process comprising:
- drawing fiber from a high temperature furnace;
- coating the fiber;
- and
- writing a Bragg grating on the coated fiber to produce the coated FBG optical fiber.
A system to produce a coated fiber Bragg grating (FBG) optical fiber, the system comprising:
- a high temperature furnace from which an optical fiber is drawn;
- a coating applicator to coat the optical fiber;
- and
- a grating writing station to write a Bragg grating on the coated fiber and produce the coated FBG optical fiber.
A hermetic carbon-coated fiber including fiber Bragg gratings (FBGs), the fiber comprising:
- a silica-based fiber;
- a carbon coating applied to the silica-based fiber;
- a Germanium dopant disposed in the coated silica-based fiber;
- a plurality of FBGs written in the doped silica-based fiber.
A hermetic carbon-coated fiber including fiber Bragg gratings (FBGs) for downhole applications, the fiber comprising:
- a silica-based fiber;
- a Germanium dopant disposed in the silica-based fiber;
- a plurality of FBGs written in the doped silica-based fiber, the FBGs being written at a higher density than for above-hole applications;
- and
- a carbon coating applied to the silica-based fiber with FBGs to hermetically seal the silica-based fiber with FBGs.
Dependencies are inferred from the claim text.