High sensitivity optical time-domain reflectometry based on Brillouin dynamic grating in polarization maintaining fiber

Kwang Yong Song; Hyuk Jin Yoon

doi:10.1117/12.975063

17 October 2012 High sensitivity optical time-domain reflectometry based on Brillouin dynamic grating in polarization maintaining fiber

Kwang Yong Song, Hyuk Jin Yoon

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842126 (2012) https://doi.org/10.1117/12.975063
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We newly propose and experimentally demonstrate high-sensitivity optical time-domain reflectometry based on Brillouin dynamic grating in polarization maintaining fiber. Distributed measurements with strain sensitivity as high as ~ 1 MHz/με is demonstrated in a 110 m fiber under test with 0.8 m spatial resolution. The operation principle with the condition for proper measurement of the grating spectrum and the advantageous features such as low operating power, high signal to noise ratio, and simple data-acquisition process are explained in comparison with ordinary Brillouin optical time-domain reflectometry, which is verified by the experimental results.

Citation Download Citation

Kwang Yong Song and Hyuk Jin Yoon "High sensitivity optical time-domain reflectometry based on Brillouin dynamic grating in polarization maintaining fiber", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842126 (17 October 2012); https://doi.org/10.1117/12.975063

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KEYWORDS

Reflectometry

Signal processing

Polarization maintaining fibers

Polarization

Data acquisition

Optical amplifiers

Spatial resolution

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