Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement

We present a synthetic-wavelength based heterodyne interferometer of optical frequency combs with wide consecutive measurement range for absolute distance measurement. The synthetic wavelength is derived from two wavelengths obtained by two band-pass filters. The interferometric phase of the synthet...

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Autores principales: Wu, Guanhao, Liao, Lei, Xiong, Shilin, Li, Guoyuan, Cai, Zhijian, Zhu, Zebin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5847515/
https://www.ncbi.nlm.nih.gov/pubmed/29531356
http://dx.doi.org/10.1038/s41598-018-22838-0
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author Wu, Guanhao
Liao, Lei
Xiong, Shilin
Li, Guoyuan
Cai, Zhijian
Zhu, Zebin
author_facet Wu, Guanhao
Liao, Lei
Xiong, Shilin
Li, Guoyuan
Cai, Zhijian
Zhu, Zebin
author_sort Wu, Guanhao
collection PubMed
description We present a synthetic-wavelength based heterodyne interferometer of optical frequency combs with wide consecutive measurement range for absolute distance measurement. The synthetic wavelength is derived from two wavelengths obtained by two band-pass filters. The interferometric phase of the synthetic wavelength is used as a marker for the pulse-to-pulse alignment, which greatly improves the accuracy of traditional peak finding method. The consecutive measurement range is enlarged by using long fiber to increase the path length difference of the reference and measurement arms. The length of the long fiber is stabilized according to the interferometric phase of a CW laser. The experimental results show the present system can realize an accuracy of 75 nm in 350 mm consecutive measurement range.
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spelling pubmed-58475152018-03-19 Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement Wu, Guanhao Liao, Lei Xiong, Shilin Li, Guoyuan Cai, Zhijian Zhu, Zebin Sci Rep Article We present a synthetic-wavelength based heterodyne interferometer of optical frequency combs with wide consecutive measurement range for absolute distance measurement. The synthetic wavelength is derived from two wavelengths obtained by two band-pass filters. The interferometric phase of the synthetic wavelength is used as a marker for the pulse-to-pulse alignment, which greatly improves the accuracy of traditional peak finding method. The consecutive measurement range is enlarged by using long fiber to increase the path length difference of the reference and measurement arms. The length of the long fiber is stabilized according to the interferometric phase of a CW laser. The experimental results show the present system can realize an accuracy of 75 nm in 350 mm consecutive measurement range. Nature Publishing Group UK 2018-03-12 /pmc/articles/PMC5847515/ /pubmed/29531356 http://dx.doi.org/10.1038/s41598-018-22838-0 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Wu, Guanhao
Liao, Lei
Xiong, Shilin
Li, Guoyuan
Cai, Zhijian
Zhu, Zebin
Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement
title Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement
title_full Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement
title_fullStr Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement
title_full_unstemmed Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement
title_short Synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement
title_sort synthetic wavelength interferometry of an optical frequency comb for absolute distance measurement
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5847515/
https://www.ncbi.nlm.nih.gov/pubmed/29531356
http://dx.doi.org/10.1038/s41598-018-22838-0
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