Distributed measurement of Brillouin dynamic grating spectrum localized by an intensity- modulated correlation-domain technique

Higher spatial resolution of the reflection spectrum measurement of Brillouin dynamic grating (BDG) was achieved by controlling phonon power distribution. We experimentally demonstrate the improvement effect of the light-source intensity-modulation method, proposed recently in a correlation-domain t...

Full description

Saved in:
Bibliographic Details
Published in:Optics express 2020-07, Vol.28 (14), p.21310-21317
Main Authors: Okawa, Youhei, Kendy Yamashita, Rodrigo, Kishi, Masato, Hotate, Kazuo
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Higher spatial resolution of the reflection spectrum measurement of Brillouin dynamic grating (BDG) was achieved by controlling phonon power distribution. We experimentally demonstrate the improvement effect of the light-source intensity-modulation method, proposed recently in a correlation-domain technique, and successfully detected an 8-cm cooled section in a 100-m-long polarization-maintaining fiber. Our method can improve the spatial resolution of BDG measurements, leading to high resolution discriminative and distributed fiber sensing of temperature and strain.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.396811