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1.发明申请公开(公告)号：US20190288475A1
公开(公告)日：2019-09-19
申请号：US16427347
申请日：2019-05-31
Inventor： Yunjiang Rao , Kang Li , Bing Han , Yun Fu , Zengling Ran
Abstract: A long-distance FODAS amplification system includes a distributed amplification unit, which includes a LEAF, a pump, and a WDM; wherein the pump light passes through the WDM into the LEAF, so as to realize distributed amplification. A long-distance FODAS amplification method includes steps of: 1) modulating and amplifying a light source to obtain the probe pulse light; 2) guiding the pump light and the probe pulse light into LEAF; 3) combining the probe pulse light with the pump light to perform distributed amplification, so as to generate power-raised Rayleigh backscattered light; and 4) converting and demodulating the Rayleigh backscattered light after being output through the circulator, so as to complete distributed sensing.
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2.发明申请Long-distance polarization and phase-sensitive optical time-domain reflectometry based on random laser amplification 审中-公开基于随机激光放大的长距离极化和相敏光时域反射测量公开(公告)号：US20140183360A1
公开(公告)日：2014-07-03
申请号：US14201915
申请日：2014-03-09
Inventor： Yunjiang Rao , Zinan Wang , Zengling Ran
IPC: G01M11/00
CPC classification number: G01D5/35354 , G01J1/42 , G01J5/10
Abstract: A long-distance polarization and phase-sensitive reflectometry based on random laser amplification for extending a sensing distance includes a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by unilateral pumps, a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by bilateral pumps, and a long-distance polarization and phase-sensitive reflectometry of a Raman amplification based on a combination of optical fiber random lasers generated by unilateral pumps and a common Raman pump source, which are applied in optical fiber perturbation sensing and have a capability of greatly improving a working distance of a sensing system and a high practicability.
Abstract translation: 基于用于扩展感测距离的随机激光放大的长距离偏振和相敏反射测量包括基于由单侧泵产生的光纤随机激光器的分布式拉曼放大的长距离偏振和相敏反射测量， 基于由双边泵生成的光纤随机激光器的分布式拉曼放大的距离偏振和相敏反射测量，以及基于单边产生的光纤随机激光器的组合的拉曼放大的长距离偏振和相敏反射测量 泵和普通的拉曼泵浦源，它们应用于光纤扰动感测中，具有大大提高感测系统工作距离和高实用性的能力。
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3.发明授权公开(公告)号：US09163960B2
公开(公告)日：2015-10-20
申请号：US14201915
申请日：2014-03-09
Inventor： Yunjiang Rao , Zinan Wang , Zengling Ran
CPC classification number: G01D5/35354 , G01J1/42 , G01J5/10
Abstract: A long-distance polarization and phase-sensitive reflectometry based on random laser amplification for extending a sensing distance includes a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by unilateral pumps, a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by bilateral pumps, and a long-distance polarization and phase-sensitive reflectometry of a Raman amplification based on a combination of optical fiber random lasers generated by unilateral pumps and a common Raman pump source, which are applied in optical fiber perturbation sensing and have a capability of greatly improving a working distance of a sensing system and a high practicability.
Abstract translation: 基于用于扩展感测距离的随机激光放大的长距离偏振和相敏反射测量包括基于由单侧泵产生的光纤随机激光器的分布式拉曼放大的长距离偏振和相敏反射测量， 基于由双边泵生成的光纤随机激光器的分布式拉曼放大的距离偏振和相敏反射测量，以及基于单边产生的光纤随机激光器的组合的拉曼放大的长距离偏振和相敏反射测量 泵和普通的拉曼泵浦源，它们应用于光纤扰动感测中，具有大大提高感测系统工作距离和高实用性的能力。
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4.发明授权公开(公告)号：US10985520B2
公开(公告)日：2021-04-20
申请号：US16427347
申请日：2019-05-31
Inventor： Yunjiang Rao , Kang Li , Bing Han , Yun Fu , Zengling Ran
Abstract: A long-distance FODAS amplification system includes a distributed amplification unit, which includes a LEAF, a pump, and a WDM; wherein the pump light passes through the WDM into the LEAF, so as to realize distributed amplification. A long-distance FODAS amplification method includes steps of: 1) modulating and amplifying a light source to obtain the probe pulse light; 2) guiding the pump light and the probe pulse light into LEAF; 3) combining the probe pulse light with the pump light to perform distributed amplification, so as to generate power-raised Rayleigh backscattered light; and 4) converting and demodulating the Rayleigh backscattered light after being output through the circulator, so as to complete distributed sensing.
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