Interferometric optical time-domain reflectometry for distributed optical fiber sensing

Sergey V. Shatalin; Vladimir N. Treschikov; Alan J. Rogers

doi:10.1117/12.316448

6 July 1998 Interferometric optical time-domain reflectometry for distributed optical fiber sensing

Sergey V. Shatalin, Vladimir N. Treschikov, Alan J. Rogers

Proceedings Volume 3479, Laser Interferometry IX: Applications; (1998) https://doi.org/10.1117/12.316448
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

The technique of optical-time domain reflectometry (OTDR) is analyzed to determine the effect of an optical phase modulation on light backscattered in an optical fiber. It is shown that the spatial distribution, along the fiber, of an external phase modulation can be measured with a spatial resolution close to that of the OTDR. A distributed interferometric sensor arrangement employing this technique has been investigated experimentally, and a satisfactory interrogation of more than one thousand resolution intervals has been demonstrated.

Citation Download Citation

Sergey V. Shatalin, Vladimir N. Treschikov, and Alan J. Rogers "Interferometric optical time-domain reflectometry for distributed optical fiber sensing", Proc. SPIE 3479, Laser Interferometry IX: Applications, (6 July 1998); https://doi.org/10.1117/12.316448

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