Grating-assisted polarization optical time-domain reflectometry for distributed fiber-optic sensing

Ming Han, Yunjing Wang, Anbo Wang

Research output: Contribution to journalArticle

11 Scopus citations


We report a novel type of polarization optical time-domain reflectometry (POTDR) for fully distributed fiber-optic sensing, in which the reflected optical signal is from a series of fiber Bragg gratings that are uniformly distributed along the fiber. Compared with a conventional POTDR that uses the Rayleigh backscattering, this grating-assisted POTDR can have a much better signal-to-noise ratio and consequently a better measurement resolution and a larger measurement range of the fiber birefringence. Experimental results have shown that the measurement resolution of the grating-assisted POTDR is almost an order of magnitude better than that of a conventional POTDR.

Original languageEnglish (US)
Pages (from-to)2028-2030
Number of pages3
JournalOptics Letters
Issue number14
Publication statusPublished - Jul 15 2007


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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