CN106500742A - 一种相位敏感光时域反射计相位解调***和相位解调方法 - Google Patents
一种相位敏感光时域反射计相位解调***和相位解调方法 Download PDFInfo
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- CN106500742A CN106500742A CN201611253531.7A CN201611253531A CN106500742A CN 106500742 A CN106500742 A CN 106500742A CN 201611253531 A CN201611253531 A CN 201611253531A CN 106500742 A CN106500742 A CN 106500742A
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- 238000000253 optical time-domain reflectometry Methods 0.000 description 7
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
- G01D5/35354—Sensor working in reflection
- G01D5/35358—Sensor working in reflection using backscattering to detect the measured quantity
- G01D5/35361—Sensor working in reflection using backscattering to detect the measured quantity using elastic backscattering to detect the measured quantity, e.g. using Rayleigh backscattering
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Cited By (8)
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---|---|---|---|---|
CN106972886A (zh) * | 2017-03-29 | 2017-07-21 | 光子瑞利科技(北京)有限公司 | 基于后向瑞利散射回波相位角度变化的光纤振动侦测小波信号音频还原技术 |
CN107389106A (zh) * | 2017-08-30 | 2017-11-24 | 中国电子科技集团公司第三十四研究所 | 一种φ‑OTDR正交相位解调***及相位解调方法 |
CN110045357A (zh) * | 2019-03-07 | 2019-07-23 | 南京合太光电科技有限公司 | 一种线性调频信号产生装置 |
CN110793558A (zh) * | 2019-11-26 | 2020-02-14 | 南京大学 | 一种相干探测型φ-otdr***及自检方法 |
CN111355485A (zh) * | 2019-09-29 | 2020-06-30 | 西安空间无线电技术研究所 | 一种延时线相位漂移消除***及方法 |
US10756820B2 (en) | 2018-05-21 | 2020-08-25 | Zhejiang Jericore Technologies Co., Ltd. | Phase analog coherent demodulation system and method for phase sensitive optical time domain reflectometry |
CN113447112A (zh) * | 2021-06-18 | 2021-09-28 | 天津大学 | 基于反射光的高频振动传感***及高频信号解调方法 |
CN114659613A (zh) * | 2022-03-28 | 2022-06-24 | 中国电子科技集团公司第三十四研究所 | 基于相位解调的分布式光纤扰动信号模拟设备及使用方法 |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106972886A (zh) * | 2017-03-29 | 2017-07-21 | 光子瑞利科技(北京)有限公司 | 基于后向瑞利散射回波相位角度变化的光纤振动侦测小波信号音频还原技术 |
CN107389106A (zh) * | 2017-08-30 | 2017-11-24 | 中国电子科技集团公司第三十四研究所 | 一种φ‑OTDR正交相位解调***及相位解调方法 |
US10756820B2 (en) | 2018-05-21 | 2020-08-25 | Zhejiang Jericore Technologies Co., Ltd. | Phase analog coherent demodulation system and method for phase sensitive optical time domain reflectometry |
CN110045357A (zh) * | 2019-03-07 | 2019-07-23 | 南京合太光电科技有限公司 | 一种线性调频信号产生装置 |
CN110045357B (zh) * | 2019-03-07 | 2022-12-06 | 南京合太光电科技有限公司 | 一种线性调频信号产生装置 |
CN111355485A (zh) * | 2019-09-29 | 2020-06-30 | 西安空间无线电技术研究所 | 一种延时线相位漂移消除***及方法 |
CN111355485B (zh) * | 2019-09-29 | 2023-03-28 | 西安空间无线电技术研究所 | 一种延时线相位漂移消除***及方法 |
CN110793558A (zh) * | 2019-11-26 | 2020-02-14 | 南京大学 | 一种相干探测型φ-otdr***及自检方法 |
CN110793558B (zh) * | 2019-11-26 | 2021-06-22 | 南京大学 | 一种相干探测型φ-otdr***及自检方法 |
CN113447112A (zh) * | 2021-06-18 | 2021-09-28 | 天津大学 | 基于反射光的高频振动传感***及高频信号解调方法 |
CN114659613A (zh) * | 2022-03-28 | 2022-06-24 | 中国电子科技集团公司第三十四研究所 | 基于相位解调的分布式光纤扰动信号模拟设备及使用方法 |
CN114659613B (zh) * | 2022-03-28 | 2023-08-01 | 中国电子科技集团公司第三十四研究所 | 基于相位解调的分布式光纤扰动信号模拟设备及使用方法 |
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