Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing
We present a novel design of few-mode fiber (FMF) with a uniform differential mode group delay (U-DMGD) among propagating modes and apply the FMF to a single-fiber delay line module for implementing microwave photonic finite impulse response (FIR) filters. By optimizing key parameters such as the co...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9133386/ |
| _version_ | 1818617212942942208 |
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| author | Jian Zhao Huan Zhang Zhiqun Yang Jinsheng Xu Tianhua Xu Chao Wang |
| author_facet | Jian Zhao Huan Zhang Zhiqun Yang Jinsheng Xu Tianhua Xu Chao Wang |
| author_sort | Jian Zhao |
| collection | DOAJ |
| description | We present a novel design of few-mode fiber (FMF) with a uniform differential mode group delay (U-DMGD) among propagating modes and apply the FMF to a single-fiber delay line module for implementing microwave photonic finite impulse response (FIR) filters. By optimizing key parameters such as the core grading exponent and the dimension of the trench of FMF, a U-DMGD between adjacent modes among four modes (LP<sub>01</sub>, LP<sub>11</sub>, LP<sub>02</sub> and LP<sub>31</sub>) over the entire C band is achieved. Wavelength dependence is entirely removed. An FIR microwave photonic filter (MPF) implemented using the designed 1-km FMF is investigated through numerical simulations. The free spectral range (FSR) of the MPF is 5.7 GHz, the 3-dB bandwidth is 1.26 GHz, and the main lobe-to-side lobe ratio (MSR) is 10.42 dB. Discussions on fabrication aspects have also been presented. The proposed single-fiber delay line structure based on FMF can significantly reduce the system complexity of microwave photonic signal processing. |
| first_indexed | 2024-12-16T17:02:07Z |
| format | Article |
| id | doaj.art-747bf0a8024f4114ad367c37c9d7d862 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T17:02:07Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-747bf0a8024f4114ad367c37c9d7d8622022-12-21T22:23:42ZengIEEEIEEE Access2169-35362020-01-01813517613518310.1109/ACCESS.2020.30071699133386Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal ProcessingJian Zhao0https://orcid.org/0000-0003-1626-2673Huan Zhang1https://orcid.org/0000-0003-2686-3368Zhiqun Yang2https://orcid.org/0000-0001-9340-0203Jinsheng Xu3https://orcid.org/0000-0001-5685-0942Tianhua Xu4https://orcid.org/0000-0002-4920-7200Chao Wang5https://orcid.org/0000-0002-0454-8079Key Laboratory of Opto-Electronics Information Technology, School of Precision Instrument and Optoelectronics Engineering, Ministry of Education, Tianjin University, Tianjin, ChinaKey Laboratory of Opto-Electronics Information Technology, School of Precision Instrument and Optoelectronics Engineering, Ministry of Education, Tianjin University, Tianjin, ChinaKey Laboratory of Opto-Electronics Information Technology, School of Precision Instrument and Optoelectronics Engineering, Ministry of Education, Tianjin University, Tianjin, ChinaKey Laboratory of Opto-Electronics Information Technology, School of Precision Instrument and Optoelectronics Engineering, Ministry of Education, Tianjin University, Tianjin, ChinaKey Laboratory of Opto-Electronics Information Technology, School of Precision Instrument and Optoelectronics Engineering, Ministry of Education, Tianjin University, Tianjin, ChinaSchool of Engineering and Digital Arts, University of Kent, Canterbury, U.K.We present a novel design of few-mode fiber (FMF) with a uniform differential mode group delay (U-DMGD) among propagating modes and apply the FMF to a single-fiber delay line module for implementing microwave photonic finite impulse response (FIR) filters. By optimizing key parameters such as the core grading exponent and the dimension of the trench of FMF, a U-DMGD between adjacent modes among four modes (LP<sub>01</sub>, LP<sub>11</sub>, LP<sub>02</sub> and LP<sub>31</sub>) over the entire C band is achieved. Wavelength dependence is entirely removed. An FIR microwave photonic filter (MPF) implemented using the designed 1-km FMF is investigated through numerical simulations. The free spectral range (FSR) of the MPF is 5.7 GHz, the 3-dB bandwidth is 1.26 GHz, and the main lobe-to-side lobe ratio (MSR) is 10.42 dB. Discussions on fabrication aspects have also been presented. The proposed single-fiber delay line structure based on FMF can significantly reduce the system complexity of microwave photonic signal processing.https://ieeexplore.ieee.org/document/9133386/Few-mode fiberuniform differential mode group delay (U-DMGD)delay linemicrowave photonic filter (MPF) |
| spellingShingle | Jian Zhao Huan Zhang Zhiqun Yang Jinsheng Xu Tianhua Xu Chao Wang Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing IEEE Access Few-mode fiber uniform differential mode group delay (U-DMGD) delay line microwave photonic filter (MPF) |
| title | Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing |
| title_full | Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing |
| title_fullStr | Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing |
| title_full_unstemmed | Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing |
| title_short | Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing |
| title_sort | few mode fibers with uniform differential mode group delay for microwave photonic signal processing |
| topic | Few-mode fiber uniform differential mode group delay (U-DMGD) delay line microwave photonic filter (MPF) |
| url | https://ieeexplore.ieee.org/document/9133386/ |
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