Digital optical signal transmission in a seismic sensor array
First Claim
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1. An apparatus for transmitting a digital information a digital optical data signal in a seismic data acquisition system, the apparatus comprising:
- a) a transducer that modulates an optical carrier to produce the digital optical data signal corresponding to a signal indicative of a sensed environmental condition; and
b) an optical interrogator in optical communication with the transducer for retrieving the digital optical data signals.
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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.
39 Citations
42 Claims
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1. An apparatus for transmitting a digital information a digital optical data signal in a seismic data acquisition system, the apparatus comprising:
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a) a transducer that modulates an optical carrier to produce the digital optical data signal corresponding to a signal indicative of a sensed environmental condition; and b) an optical interrogator in optical communication with the transducer for retrieving the digital optical data signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of transmitting a digital optical data signal in a seismic data acquisition system, the method comprising:
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a) modulating an optical carrier to produce the digital optical data signal corresponding to a signal indicative of a sensed environmental condition using a transducer; and b) retrieving the digital optical data signals from the optical carrier using an optical interrogator. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An apparatus for acquiring digital seismic information, the apparatus comprising:
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a) a sensor for sensing an environmental condition, the sensor providing a first signal indicative of the sensed environmental condition; b) a transducer coupled to the sensor for receiving the first signal and converting the first signal to a digital optical data signal indicative of the sensed environmental condition; and c) an optical fiber coupled to the transducer. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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38. A system for acquiring digital seismic information, the system comprising:
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a) a sensor for sensing an environmental condition and providing a first signal indicative of the sensed environmental condition; b) a transducer coupled to the sensor for receiving the first signal and converting the first signal to a digital optical data signal indicative of the sensed environmental condition; c) an optical fiber coupled to the transducer; and d) a recorder recording information based at least in part on the digital optical data signal, the recorded information being indicative of the sensed environmental condition. - View Dependent Claims (39)
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40. A method of acquiring digital seismic information relating to an environmental condition, the method comprising:
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a) sensing the environmental condition with a sensor; b) generating a first signal indicative of the sensed environmental condition; c) converting the first signal to a digital optical data signal relating to the digital information; and d) transmitting the digital optical data signal in an optical fiber. - View Dependent Claims (41, 42)
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Specification