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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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/17/2938 |
| _version_ | 1797493978172489728 |
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| author | Ke Li Pei Yuan Lidan Lu Mingli Dong Lianqing Zhu |
| author_facet | Ke Li Pei Yuan Lidan Lu Mingli Dong Lianqing Zhu |
| author_sort | Ke Li |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T01:27:45Z |
| format | Article |
| id | doaj.art-72135e70cc7f4d2badcac7adb4394610 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T01:27:45Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-72135e70cc7f4d2badcac7adb43946102023-11-23T13:48:08ZengMDPI AGNanomaterials2079-49912022-08-011217293810.3390/nano12172938PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation SystemKe Li0Pei Yuan1Lidan Lu2Mingli Dong3Lianqing Zhu4Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, ChinaA 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.https://www.mdpi.com/2079-4991/12/17/2938fiber Bragg grating interrogatorarrayed waveguide gratingplanar lightwave circuitsilicon photonics |
| spellingShingle | Ke Li Pei Yuan Lidan Lu Mingli Dong Lianqing Zhu PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System Nanomaterials fiber Bragg grating interrogator arrayed waveguide grating planar lightwave circuit silicon photonics |
| 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 | fiber Bragg grating interrogator arrayed waveguide grating planar lightwave circuit silicon photonics |
| url | https://www.mdpi.com/2079-4991/12/17/2938 |
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