Optical fiber vibration detection equipment based on foreign fiber remote pump amplification
The utility model discloses optical fiber vibration detection equipment based on foreign fiber remote pump amplification. The equipment comprises an optical fiber vibration sensor based on a coherent rayleigh scattering technology and N remote pump amplifiers, wherein the sensor comprises an annular...
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Format | Patent |
Language | English |
Published |
25.02.2015
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Abstract | The utility model discloses optical fiber vibration detection equipment based on foreign fiber remote pump amplification. The equipment comprises an optical fiber vibration sensor based on a coherent rayleigh scattering technology and N remote pump amplifiers, wherein the sensor comprises an annular device of three ports; the N remote pump amplifiers are connected in series one by one through a sensing optical fiber; the N remote pump amplifiers are connected to the sensor through a remote pump optical fiber; a first remote pump amplifier of the N remote pump amplifiers is connected to the annular device through the sensing optical fiber; the first remote pump amplifier receives a pulse light source from the annular device and successively transmits to the remote pump amplifiers which are connected in series; each remote pump amplifier in the N remote pump amplifiers amplifies the pulse light source received by each remote pump amplifier and N is a positive integer which is greater than 1. A foreign fiber remote pump amplification mode is used and centralized amplification is performed on each segment of sensing optical fibers so that a fai-OTDR sensing distance can be effectively lengthened; a light signal used for detection is enhanced and detection accuracy is increased. |
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AbstractList | The utility model discloses optical fiber vibration detection equipment based on foreign fiber remote pump amplification. The equipment comprises an optical fiber vibration sensor based on a coherent rayleigh scattering technology and N remote pump amplifiers, wherein the sensor comprises an annular device of three ports; the N remote pump amplifiers are connected in series one by one through a sensing optical fiber; the N remote pump amplifiers are connected to the sensor through a remote pump optical fiber; a first remote pump amplifier of the N remote pump amplifiers is connected to the annular device through the sensing optical fiber; the first remote pump amplifier receives a pulse light source from the annular device and successively transmits to the remote pump amplifiers which are connected in series; each remote pump amplifier in the N remote pump amplifiers amplifies the pulse light source received by each remote pump amplifier and N is a positive integer which is greater than 1. A foreign fiber remote pump amplification mode is used and centralized amplification is performed on each segment of sensing optical fibers so that a fai-OTDR sensing distance can be effectively lengthened; a light signal used for detection is enhanced and detection accuracy is increased. |
Author | CAI YONGJUN TAN DONGJIE QIU HONGHUI GUO FENGLIN SUN WEI MA YUNBIN ZHOU YAN TIAN XIAOZHONG WANG HAIMING LIU LU |
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Notes | Application Number: CN20142500403U |
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Snippet | The utility model discloses optical fiber vibration detection equipment based on foreign fiber remote pump amplification. The equipment comprises an optical... |
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SubjectTerms | MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING PHYSICS TESTING |
Title | Optical fiber vibration detection equipment based on foreign fiber remote pump amplification |
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