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A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing

During new fiber sensor development experiments, an easy-to-fabricate simple sensing structure with a trench and partially ablated fiber core is fabricated by using an 800 nm 35 fs 1 kHz laser. It is demonstrated that the structure forms a Mach-Zehnder interferometer (MZI) with the interference betw...

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Autores principales: Zhao, Longjiang, Jiang, Lan, Wang, Sumei, Xiao, Hai, Lu, Yongfeng, Tsai, Hai-Lung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274066/
https://www.ncbi.nlm.nih.gov/pubmed/22346567
http://dx.doi.org/10.3390/s110100054
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author Zhao, Longjiang
Jiang, Lan
Wang, Sumei
Xiao, Hai
Lu, Yongfeng
Tsai, Hai-Lung
author_facet Zhao, Longjiang
Jiang, Lan
Wang, Sumei
Xiao, Hai
Lu, Yongfeng
Tsai, Hai-Lung
author_sort Zhao, Longjiang
collection PubMed
description During new fiber sensor development experiments, an easy-to-fabricate simple sensing structure with a trench and partially ablated fiber core is fabricated by using an 800 nm 35 fs 1 kHz laser. It is demonstrated that the structure forms a Mach-Zehnder interferometer (MZI) with the interference between the laser light passing through the air in the trench cavity and that in the remained fiber core. The fringe visibilities are all more than 25 dB. The transmission spectra vary with the femtosecond (fs) laser ablation scanning cycle. The free spectral range (FSR) decreases as the trench length increases. The MZI structure is of very high fabrication and sensing repeatability. The sensing mechanism is theoretically discussed, which is in agreement with experiments. The test sensitivity for acetone vapor is about 10(4) nm/RIU, and the temperature sensitivity is 51.5 pm/°C at 200 ∼ 875 °C with a step of 25 °C.
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spelling pubmed-32740662012-02-15 A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing Zhao, Longjiang Jiang, Lan Wang, Sumei Xiao, Hai Lu, Yongfeng Tsai, Hai-Lung Sensors (Basel) Article During new fiber sensor development experiments, an easy-to-fabricate simple sensing structure with a trench and partially ablated fiber core is fabricated by using an 800 nm 35 fs 1 kHz laser. It is demonstrated that the structure forms a Mach-Zehnder interferometer (MZI) with the interference between the laser light passing through the air in the trench cavity and that in the remained fiber core. The fringe visibilities are all more than 25 dB. The transmission spectra vary with the femtosecond (fs) laser ablation scanning cycle. The free spectral range (FSR) decreases as the trench length increases. The MZI structure is of very high fabrication and sensing repeatability. The sensing mechanism is theoretically discussed, which is in agreement with experiments. The test sensitivity for acetone vapor is about 10(4) nm/RIU, and the temperature sensitivity is 51.5 pm/°C at 200 ∼ 875 °C with a step of 25 °C. Molecular Diversity Preservation International (MDPI) 2010-12-23 /pmc/articles/PMC3274066/ /pubmed/22346567 http://dx.doi.org/10.3390/s110100054 Text en © 2011 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Zhao, Longjiang
Jiang, Lan
Wang, Sumei
Xiao, Hai
Lu, Yongfeng
Tsai, Hai-Lung
A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing
title A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing
title_full A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing
title_fullStr A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing
title_full_unstemmed A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing
title_short A High-Quality Mach-Zehnder Interferometer Fiber Sensor by Femtosecond Laser One-Step Processing
title_sort high-quality mach-zehnder interferometer fiber sensor by femtosecond laser one-step processing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274066/
https://www.ncbi.nlm.nih.gov/pubmed/22346567
http://dx.doi.org/10.3390/s110100054
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