Optical waveguides – Optical waveguide sensor – Including physical deformation or movement of waveguide
Reexamination Certificate
2007-12-11
2007-12-11
Connelly-Cushwa, Michelle (Department: 2874)
Optical waveguides
Optical waveguide sensor
Including physical deformation or movement of waveguide
C385S037000
Reexamination Certificate
active
11191243
ABSTRACT:
An optical transducer100, 200and method for the simultaneous measurement of downhole pressure and temperature in a single- or multi-point configuration including a body10a/10bwith an elastic membrane50onto which at least one Bragg grating60a/60bis attached, and at least an additional Bragg grating60b/60acontained on the same optical fiber30. The elastic membrane50conveys strain proportional to the pressure and temperature conditions to which is submitted said transducer to at least one Bragg grating60a/60b, the portion of light not reflected by the Bragg gratings60a, 60bcontinues along the remaining of the optical fiber30.
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Arias Vidal Jose Luiz
Barbosa Braga Arthur Martins
da Silva Júnior Manoel Felician
dos Santos Lorenzo Joao Luiz
Ferreira Lincoln Homero Thomé
Connelly-Cushwa Michelle
Nixon & Vanderhye PC
Petroleo Brasileiro S.A. - Petrobras
Rahll Jerry T
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