Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-05-29
2007-05-29
Allen, Stephone B. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C385S012000, C702S014000
Reexamination Certificate
active
10784665
ABSTRACT:
The invention describes a sensor array with digital signals transmitted over an optical fiber for seismic exploration systems. The seismic system includes a transducer for providing digital optical data signals and an optical interrogator for collecting the digital data. The transducer provides data from seismic sensors to the optical interrogator by acting on an optical carrier transmitted along the optical fiber. The system is designed to utilize known electromechanical seismic sensors with fiber optic telemetry.
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patent: 6271766 (2001-08-01), Didden et al.
patent: 6522797 (2003-02-01), Siems et al.
Behn Lawrence P.
Fageraas Bjarte
Allen Stephone B.
Input / Output Inc.
Madan Mossman & Sriram P.C.
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