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Optical sensor using space-domain active fiber cavity ringdown technique
A novel active fiber cavity ringdown (FCRD) technique using frequency-shifted interferometry (FSI) is proposed for the first time. Using this scheme, external parameters can be monitored in the space domain by measuring the ringdown distance instead of ringdown time. A bidirectional erbium-doped fib...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9352676/ https://www.ncbi.nlm.nih.gov/pubmed/35927568 http://dx.doi.org/10.1038/s41598-022-17565-6 |
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author | Chen, Wenjia Ou, Yiwen Cheng, Chunfu Zhu, Yuanchang Xiao, Wen Lv, Hui |
author_facet | Chen, Wenjia Ou, Yiwen Cheng, Chunfu Zhu, Yuanchang Xiao, Wen Lv, Hui |
author_sort | Chen, Wenjia |
collection | PubMed |
description | A novel active fiber cavity ringdown (FCRD) technique using frequency-shifted interferometry (FSI) is proposed for the first time. Using this scheme, external parameters can be monitored in the space domain by measuring the ringdown distance instead of ringdown time. A bidirectional erbium-doped fiber amplifier (Bi-EDFA) is employed to compensate the inherent cavity loss for achieving higher sensitivity. And two band-pass filters are used to reduce the amplified spontaneous emission (ASE) noise of the Bi-EDFA. Compared with the well-known time-domain active FCRD scheme, our proposed method enables us to avoid using pulsed laser needed in time-domain active FCRD, it uses continuous-wave laser to inject into the fiber cavity and stabilize the optical power in the fiber cavity, which can suppress the baseline drift of ringdown signal caused by the gain fluctuations of the EDFA and thus improve the detecting precision. Moreover, this novel method enables us to use differential detection method for further reducing the ASE noise, and thus eliminating the baseline drift of ringdown signal. A magnetic field sensor was developed as a proof-of-concept demonstration. The experimental results demonstrate that the proposed sensor with a sensitivity of 0.01537 (1/km·Gs) was achieved. This is the highest magnetic field sensitivity compared to the time-domain active FLRD method. Due to the reduced ASE noise, the stability of the proposed sensing system was also greatly improved. |
format | Online Article Text |
id | pubmed-9352676 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-93526762022-08-06 Optical sensor using space-domain active fiber cavity ringdown technique Chen, Wenjia Ou, Yiwen Cheng, Chunfu Zhu, Yuanchang Xiao, Wen Lv, Hui Sci Rep Article A novel active fiber cavity ringdown (FCRD) technique using frequency-shifted interferometry (FSI) is proposed for the first time. Using this scheme, external parameters can be monitored in the space domain by measuring the ringdown distance instead of ringdown time. A bidirectional erbium-doped fiber amplifier (Bi-EDFA) is employed to compensate the inherent cavity loss for achieving higher sensitivity. And two band-pass filters are used to reduce the amplified spontaneous emission (ASE) noise of the Bi-EDFA. Compared with the well-known time-domain active FCRD scheme, our proposed method enables us to avoid using pulsed laser needed in time-domain active FCRD, it uses continuous-wave laser to inject into the fiber cavity and stabilize the optical power in the fiber cavity, which can suppress the baseline drift of ringdown signal caused by the gain fluctuations of the EDFA and thus improve the detecting precision. Moreover, this novel method enables us to use differential detection method for further reducing the ASE noise, and thus eliminating the baseline drift of ringdown signal. A magnetic field sensor was developed as a proof-of-concept demonstration. The experimental results demonstrate that the proposed sensor with a sensitivity of 0.01537 (1/km·Gs) was achieved. This is the highest magnetic field sensitivity compared to the time-domain active FLRD method. Due to the reduced ASE noise, the stability of the proposed sensing system was also greatly improved. Nature Publishing Group UK 2022-08-04 /pmc/articles/PMC9352676/ /pubmed/35927568 http://dx.doi.org/10.1038/s41598-022-17565-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Chen, Wenjia Ou, Yiwen Cheng, Chunfu Zhu, Yuanchang Xiao, Wen Lv, Hui Optical sensor using space-domain active fiber cavity ringdown technique |
title | Optical sensor using space-domain active fiber cavity ringdown technique |
title_full | Optical sensor using space-domain active fiber cavity ringdown technique |
title_fullStr | Optical sensor using space-domain active fiber cavity ringdown technique |
title_full_unstemmed | Optical sensor using space-domain active fiber cavity ringdown technique |
title_short | Optical sensor using space-domain active fiber cavity ringdown technique |
title_sort | optical sensor using space-domain active fiber cavity ringdown technique |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9352676/ https://www.ncbi.nlm.nih.gov/pubmed/35927568 http://dx.doi.org/10.1038/s41598-022-17565-6 |
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