Optical waveguides – Optical waveguide sensor
Reexamination Certificate
2004-09-02
2008-10-07
Peng, Charlie (Department: 2883)
Optical waveguides
Optical waveguide sensor
Reexamination Certificate
active
07433551
ABSTRACT:
A fiber optic system including a plurality of optical sensors, each with an identification system is disclosed. The fiber optic system includes a fiber, a demodulator, and at least one coupler, optical sensor and corresponding identification system. The identification system is powered by light shunted from the fiber by the coupler to a modulating device. The modulating device modulates the light and transmits it to a power converting device, which transforms the light energy into electrical energy. The electrical energy powers a high temperature integrated circuit upon which is stored a digital identification of a respective optical sensor. The integrated circuit, upon being powered up, sends a modulated response back up to the surface through the modulating device. Alternatively, a passive identification system is described, wherein identification information for a sensor is encoded onto the optical beam as it passes through reflective devices along the length of the fiber.
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International Search Report Issued by ISA/US on Mar. 17, 2005.
Jeff Hecht, “Understanding Fiber Optics,” 99, 158-159 (4thed., Prentice Hall 2002).
Boyd Clark D.
Childers Brooks A.
Poland Stephen H.
Baker Hughes Incorporated
Peng Charlie
The H.T. Than Law Group
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