Intensity noise limit in a phase-sensitive optical time-domain reflectometer with a semiconductor laser source

被引:23
|
作者
Alekseev, A. E. [1 ,2 ]
Tezadov, Ya A. [3 ]
Potapov, V. T. [1 ]
机构
[1] Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Vvedenskogo Sq 1, Fryazino, Moscow Region, Russia
[2] Petrofibre Ltd, Klinskiy proezd, 7 Novomoskovsk, Tula, Russia
[3] IPG Photon, Russian Branch, Vvedenskogo Sq 1,Bld 3, Fryazino, Moscow Region, Russia
关键词
fiber scattered-light interferometer; aliasing; autocovariance function; noise power spectral density; autocorrelation function; fiber optic sensor; optical time-domain reflectometer; SCATTERED-LIGHT INTERFEROMETER; STATISTICAL PROPERTIES;
D O I
10.1088/1555-6611/aa6378
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In the present paper we perform, for the first time, the analysis of the average intensity noise power level at the output of a coherent phase-sensitive optical time-domain reflectometer (phase-OTDR) with a semiconductor laser source. The origin of the considered intensity noise lies in random phase fluctuations of a semiconductor laser source field. These phase fluctuations are converted to intensity noise in the process of interference of backscattered light. This intensity noise inevitably emerges in every phase-OTDR spatial channel and limits its sensitivity to external phase actions. The analysis of intensity noise in a phase-OTDR was based on the study of a fiber scattered-light interferometer (FSLI) which is treated as the constituent part of OTDR. When considered independently, FSLI has a broad intensity noise spectrum at its output; when FSLI is treated as a part of a phase-OTDR, due to aliasing effect, the wide FSLI noise spectrum is folded within the spectral band, determined by the probe pulse repetition frequency. In the analysis one of the conventional phase-OTDR schemes with rectangular dual-pulse probe signal was considered, the FSLI, which corresponds to this OTDR scheme, has two scattering fiber segments with additional time delay introduced between backscattered fields. The average intensity noise power and resulting noise spectrum at the output of this FSLI are determined by the degree of coherence of the semiconductor laser source, the length of the scattering fiber segments and by the additional time delay between the scattering segments. The average intensity noise characteristics at the output of the corresponding phase-OTDR are determined by the analogous parameters: the source coherence, the lengths of the parts constituting the dual-pulse and the time interval which separates the parts of the dual-pulse. In the paper the expression for the average noise power spectral density (NPSD) at the output of FSLI was theoretically derived and experimentally verified. Based on the found average NPSD of FSLI, a simple relation connecting the phaseOTDR parameters and the limiting level of full average intensity noise power at its output was derived. This relation was verified by experimental measurement of the average noise power at the output of phase-OTDR. The limiting noise level, considered in the paper, determines the fundamental noise floor for the phase-OTDR with given parameters of the source coherence, probe pulse length and time delay between two pulses constituting the dual-pulse.
引用
收藏
页数:13
相关论文
共 50 条
  • [41] Quantitative measurement of dynamic nanostrain based on a phase-sensitive optical time domain reflectometer
    Dong, Yongkang
    Chen, Xi
    Liu, Erhu
    Fu, Cheng
    Zhang, Hongying
    Lu, Zhiwei
    [J]. APPLIED OPTICS, 2016, 55 (28) : 7810 - 7815
  • [42] Phase-Sensitive Optical Time Domain Reflectometer with Dual-Wavelength Probe Pulse
    Shi, Yi
    Feng, Hao
    Zeng, Zhoumo
    [J]. INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS, 2015,
  • [43] Pattern Recognition of Phase-Sensitive Optical Time-Domain Reflectometer Based on Conditional Generative Adversarial Network Data Augmentation
    Yin, Zhang
    Ting, Hu
    Li Youxing
    Jian, Wang
    Yuan Libo
    [J]. ACTA OPTICA SINICA, 2024, 44 (01)
  • [44] Review of Research on Phase Sensitive Optical Time-Domain Reflectometer Based on Phase Demodulation
    Si Zhaopeng
    Bu Zehua
    Mao Bangning
    Zhao Chunliu
    Xu Ben
    Kang Juan
    Li Yi
    Jin Shangzhong
    [J]. LASER & OPTOELECTRONICS PROGRESS, 2022, 59 (11)
  • [45] Fading reduction in a phase optical time-domain reflectometer with multimode sensitive fiber
    Alekseev, A. E.
    Vdovenko, V. S.
    Gorshkov, B. G.
    Potapov, V. T.
    Simikin, D. E.
    [J]. LASER PHYSICS, 2016, 26 (09)
  • [46] Fiber-Optic Telecommunication Network Wells Monitoring by Phase-Sensitive Optical Time-Domain Reflectometer with Disturbance Recognition
    Zhirnov, Andrey A.
    Chesnokov, German Y.
    Stepanov, Konstantin V.
    Gritsenko, Tatyana V.
    Khan, Roman I.
    Koshelev, Kirill I.
    Chernutsky, Anton O.
    Svelto, Cesare
    Pnev, Alexey B.
    Valba, Olga V.
    [J]. SENSORS, 2023, 23 (10)
  • [47] Optimal detection bandwidth for phase-sensitive optical time-domain reflectometry
    Lu, Xin
    Soto, Marcelo A.
    Thevenaz, Luc
    [J]. SIXTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS, 2016, 9916
  • [48] Chirped-pulse phase-sensitive optical time-domain reflectometry
    Gonzalez-Herraez, Miguel
    Garcia-Ruiz, Andres
    Corredera, Pedro
    Pastor-Graells, Juan
    Fernandez-Ruiz, Maria R.
    Martins, Hugo F.
    Martin-Lopez, Sonia
    [J]. 2016 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP), 2016,
  • [49] Phase-sensitive time-domain terahertz reflectometry
    Pashkin, A
    Kadlec, F
    Nemec, H
    Kuzel, P
    [J]. CONFERENCE DIGEST OF THE 2004 JOINT 29TH INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 12TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, 2004, : 373 - 374
  • [50] Coherent Noise Reduction in High Visibility Phase-Sensitive Optical Time Domain Reflectometer for Distributed Sensing of Ultrasonic Waves
    Martins, Hugo F.
    Martin-Lopez, Sonia
    Corredera, Pedro
    Filograno, Massimo L.
    Frazao, Orlando
    Gonzalez-Herraez, Miguel
    [J]. JOURNAL OF LIGHTWAVE TECHNOLOGY, 2013, 31 (23) : 3631 - 3637