Abstract
Abstract
In standard single-end-access Brillouin optical correlation-domain reflectometry (BOCDR), the systematic error caused by the phase difference between amplitude modulation (AM) and frequency modulation (FM) in the light source can be up to tens of megahertz, causing considerable errors in strain and temperature measurement. In this letter, we develop a new concept of two-end-access BOCDR, in which light is injected into each end of a sensing fiber in turn and the measured results of the Brillouin frequency shift distributions are combined. We numerically show that this configuration can suppress the systematic error caused by the AM-FM phase difference by approximately 90%.
Funder
Takahashi Industrial and Economic Research Foundation
Telecommunications Advancement Foundation
Murata Science Foundation
Yazaki Memorial Foundation for Science and Technology
Noguchi Institute
Japan Society for the Promotion of Science
Subject
General Physics and Astronomy,General Engineering
Cited by
3 articles.
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