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

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

Research output: Contribution to journalArticlepeer-review

Abstract

We propose a long range, high precision optical time domain reflectometry (OTDR) based on an all-fiber supercontinuum source. The source simply consists of a CW pump laser with moderate power and a section of fiber, which has a zero dispersion wavelength near the laser's central wavelength. Spectrum and time domain properties of the source are investigated, showing that the source has great capability in nonlinear optics, such as correlation OTDR due to its ultra-wide-band chaotic behavior, and mm-scale spatial resolution is demonstrated. Then we analyze the key factors limiting the operational range of such an OTDR, e. g., integral Rayleigh backscattering and the fiber loss, which degrades the optical signal to noise ratio at the receiver side, and then the guideline for counter-act such signal fading is discussed. Finally, we experimentally demonstrate a correlation OTDR with 100km sensing range and 8.2cm spatial resolution (1.2 million resolved points), as a verification of theoretical analysis.

Original languageEnglish
Pages (from-to)15514-15520
Number of pages7
JournalOptics Express
Volume23
Issue number12
Early online date4 Jun 2015
DOIs
Publication statusPublished - 15 Jun 2015

Fingerprint Dive into the research topics of 'Long-range and high-precision correlation optical time-domain reflectometry utilizing an all-fiber chaotic source'. Together they form a unique fingerprint.

Cite this