Brillouin optical correlation-domain reflectometry based on arbitrary waveform modulation: A theoretical study

Kohei Noda, Heeyoung Lee, Kentaro Nakamura, Yosuke Mizuno

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We put forward a new theory on Brillouin optical correlation-domain reflectometry (BOCDR) based on arbitrary waveform modulation. We derive a universal representation for the spatial resolution using the foot convexity of the beat spectrum. This result well explains the previous results based on sinusoidal modulation, and thus our theory is the consistent extension of the conventional theory on BOCDR. This representation is also applicable to the spatial resolution evaluation of more complicated modulation schemes, such as the combined use of intensity and frequency modulations even with some phase delay. We also discuss what kinds of modulation waveforms should not be employed for distributed measurement to ensure high spatial resolution.

Original languageEnglish
Pages (from-to)13794-13805
Number of pages12
JournalOptics Express
Volume29
Issue number9
DOIs
Publication statusPublished - 2021 Apr 26

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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