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PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System

A fiber Bragg grating (FBG) interrogator is a scientific instrument that converts the wavelength change of FBG sensors into readable electrical signals. To achieve miniaturization and integration of FBG interrogator, we designed and fabricated a 36-channel array waveguide grating (AWG) on silica-bas...

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Autores principales: Li, Ke, Yuan, Pei, Lu, Lidan, Dong, Mingli, Zhu, Lianqing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457530/
https://www.ncbi.nlm.nih.gov/pubmed/36079975
http://dx.doi.org/10.3390/nano12172938
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author Li, Ke
Yuan, Pei
Lu, Lidan
Dong, Mingli
Zhu, Lianqing
author_facet Li, Ke
Yuan, Pei
Lu, Lidan
Dong, Mingli
Zhu, Lianqing
author_sort Li, Ke
collection PubMed
description A fiber Bragg grating (FBG) interrogator is a scientific instrument that converts the wavelength change of FBG sensors into readable electrical signals. To achieve miniaturization and integration of FBG interrogator, we designed and fabricated a 36-channel array waveguide grating (AWG) on silica-based planar lightwave circuits (PLC) as a key device in a built FBG interrogation system. It is used to achieve continuous demodulation in C-band, while maintaining high resolution. This AWG has a 1.6 nm channel spacing, 3-dB bandwidth of 1.76 nm, non-adjacent channel crosstalk of −29.76 dB, and insertion loss of 3.46 dB. The dynamic range of the FBG interrogation system we built was tested to be 1522.4–1578.4 nm, with an interrogation resolution of 1 pm and accuracy of less than 1 pm in the dynamic range of 1523.16–1523.2 nm. The test results show that the FBG interrogation technology, based on AWG, can realize FBG wavelengths accurately demodulated, which has high application value in aerospace, deep sea exploration, and environmental monitoring, as well as other fields.
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spelling pubmed-94575302022-09-09 PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System Li, Ke Yuan, Pei Lu, Lidan Dong, Mingli Zhu, Lianqing Nanomaterials (Basel) Article A fiber Bragg grating (FBG) interrogator is a scientific instrument that converts the wavelength change of FBG sensors into readable electrical signals. To achieve miniaturization and integration of FBG interrogator, we designed and fabricated a 36-channel array waveguide grating (AWG) on silica-based planar lightwave circuits (PLC) as a key device in a built FBG interrogation system. It is used to achieve continuous demodulation in C-band, while maintaining high resolution. This AWG has a 1.6 nm channel spacing, 3-dB bandwidth of 1.76 nm, non-adjacent channel crosstalk of −29.76 dB, and insertion loss of 3.46 dB. The dynamic range of the FBG interrogation system we built was tested to be 1522.4–1578.4 nm, with an interrogation resolution of 1 pm and accuracy of less than 1 pm in the dynamic range of 1523.16–1523.2 nm. The test results show that the FBG interrogation technology, based on AWG, can realize FBG wavelengths accurately demodulated, which has high application value in aerospace, deep sea exploration, and environmental monitoring, as well as other fields. MDPI 2022-08-25 /pmc/articles/PMC9457530/ /pubmed/36079975 http://dx.doi.org/10.3390/nano12172938 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Ke
Yuan, Pei
Lu, Lidan
Dong, Mingli
Zhu, Lianqing
PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System
title PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System
title_full PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System
title_fullStr PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System
title_full_unstemmed PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System
title_short PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System
title_sort plc-based arrayed waveguide grating design for fiber bragg grating interrogation system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457530/
https://www.ncbi.nlm.nih.gov/pubmed/36079975
http://dx.doi.org/10.3390/nano12172938
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