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High-resolution distributed analysis on Brillouin dynamic grating by differential measurement and matched filtering
- Authors
- Youn, Jae Hyeong; Song, Kwang Yong
- Issue Date
- Jul-2023
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Brillouin dynamic grating; Brillouin scattering; Correlation; Distributed measurement; Frequency modulation; Modulation; Optical fiber measurements; Optical fiber sensors; Optical fibers; Optical reflection; Reflection; Scattering; Spatial resolution
- Citation
- Journal of Lightwave Technology, v.41, no.14, pp 1 - 7
- Pages
- 7
- Journal Title
- Journal of Lightwave Technology
- Volume
- 41
- Number
- 14
- Start Page
- 1
- End Page
- 7
- ISSN
- 0733-8724
1558-2213
- Abstract
- Improvement of spatial resolution in the distributed analysis on Brillouin dynamic grating (BDG) in a polarization-maintaining fiber (PMF) is demonstrated using a differential measurement (DM) scheme and a matched RF low-pass filter. The DM is applied to remove the reflection signals from uncorrelated positions, and a RF low pass filter optimized for a target spatial resolution is used to suppress the high-frequency common noise remaining in the BDG spectrum. In experimental confirmation distribution of the BDG spectra in a 1 km PMF is measured with a 5 cm spatial resolution, which is equal to the nominal spatial resolution determined by the synthesis of optical coherence function in the correlation-domain analysis system. IEEE
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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