Long-range and high-resolution correlation optical time-domain reflectometry utilizing an all optical chaotic source

M. Q. Fan; Z. N. Wang; H. Wu; D. V. Churkin; Y. Li; L. Zhang; X. Y. Qian; Y. J. Rao

doi:10.1117/12.2203105

1 July 2015 Long-range and high-resolution correlation optical time-domain reflectometry utilizing an all optical chaotic source

M. Q. Fan, Z. N. Wang, H. Wu, D. V. Churkin, Y. Li, L. Zhang, X. Y. Qian, Y. J. Rao

Author Affiliations +

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965548 (2015) https://doi.org/10.1117/12.2203105
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

A high resolution optical time domain reflectometry (OTDR) based on an all-fiber chaotic source is demonstrated. We analyze the key factors limiting the operational range of such an OTDR, e.g., integral Rayleigh backscattering and the fiber loss, which degrade the optical signal to noise ratio at the receiver side, and then the guideline for counter-act such signal fading is discussed. The experimentally demonstrated correlation OTDR presents ability of 100km sensing range and 8.2cm spatial resolution (1.2 million resolved points), as a verification of the theoretical analysis. To the best of our knowledge, this is the first time that correlation OTDR measurement is performed over such a long distance with such high precision.

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M. Q. Fan, Z. N. Wang, H. Wu, D. V. Churkin, Y. Li, L. Zhang, X. Y. Qian, and Y. J. Rao "Long-range and high-resolution correlation optical time-domain reflectometry utilizing an all optical chaotic source", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965548 (1 July 2015); https://doi.org/10.1117/12.2203105

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