Optical fiber demodulator for optical fiber data acquisition system and optical fiber data acquisition system
A technology of data acquisition system and optical fiber demodulator, which is applied in the direction of seismic signal receiver, seismic signal transmission, seismic signal recording, etc., can solve the problem of seismic data recording vibration start time, etc., to improve communication convenience and use experience, volume reduction effect
Pending Publication Date: 2022-04-05
THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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Problems solved by technology
[0005] The technical problem to be solved in the present invention is how to improve the integration degree of the optical fiber demodulator, and how to solve the problem of the start time of seismic data recording vibration, and provide an optical fiber demodulator and an optical fiber data acquisition system for the optical fiber data acquisition system
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[0037] In order to further explain the technical means and functions adopted by the present invention to achieve the intended purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0038] In order to solve at least some of the technical problems mentioned in the above background technology, such as Figure 1 to Figure 8 As shown, the present invention provides an optical fiber demodulator and an optical fiber data acquisition system for an optical fiber data acquisition system. The optical fiber demodulator includes: a transmitting component, a receiving component, a GPS timer, a communication circuit and a chassis.
[0039] Among them, the transmitting component includes a plurality of laser light sources, and wavelength division multiplexers, acousto-optic modulators, optical amplifiers and fiber couplers arranged in sequence on the optical path of the initial light waves emitted by the multi...
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The invention provides an optical fiber demodulator for an optical fiber data acquisition system and the optical fiber data acquisition system, and the optical fiber demodulator comprises a transmitting assembly, a receiving assembly, a GPS time service device, a communication circuit and a case. The transmitting assembly comprises a plurality of laser light sources, and a wavelength division multiplexer, an acousto-optic modulator, an optical amplifier and an optical fiber coupler which are sequentially arranged on an optical path of initial light waves transmitted by the laser light sources. The transmitting assembly is used for transmitting and outputting the light waves to the wave detector. The receiving assembly comprises an optical attenuator, a wavelength division demultiplexer, a photoelectric detector and a modulation-demodulation circuit which are sequentially arranged on an optical path, and the receiving assembly is used for receiving multiple beams of signal light output by the detector and converting the multiple beams of signal light into corresponding electric signals. The communication circuit is in communication connection with the transmitting assembly, the receiving assembly and the GPS time service device, the communication circuit receives and demodulates the electric signals to obtain data, and time marks are marked for the data through the GPS time service device to obtain seismic data. The transmitting assembly, the receiving assembly and the communication circuit are integrated in the case.
Description
technical field [0001] The invention relates to the technical field of optical communication equipment, in particular to an optical fiber demodulator used in an optical fiber data acquisition system and an optical fiber data acquisition system. Background technique [0002] The optical fiber seismic data acquisition system is the key equipment for earth exploration that is urgently needed for land resources, minerals, petroleum and other resources, and geological surveys. my country is implementing an energy development strategy, and there is an urgent need to accelerate the speed of mineral exploration and oil and gas development, so as to provide resource guarantee for the rapidly developing economy. At present, seismic data acquisition equipment with dynamic coil as the mainstream has problems such as power supply difficulties, large electromagnetic interference, and slow data transmission, which limit the development of seismic exploration technology to a certain extent....
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Login to View More IPC IPC(8): G01V1/24G01V1/18G01V1/22
Inventor 李勤李文韬
Owner THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP