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Few-mode fibers with uniform differential mode group delay for microwave photonic signal processing
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Zhao, Jian, Zhang, Huan, Yang, Zhiqun, Xu, Jinsheng, Xu, Tianhua and Wang, Chao (2020) Few-mode fibers with uniform differential mode group delay for microwave photonic signal processing. IEEE Access, 8 . pp. 135176-135183. doi:10.1109/ACCESS.2020.3007169
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WRAP-few-mode-fibers-uniform-differential-mode-group-delay-microwave-photonic-signal-processing-Xu-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (5Mb) | Preview |
Official URL: http://dx.doi.org/10.1109/ACCESS.2020.3007169
Abstract
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 01 , LP 11 , LP 02 and LP 31 ) 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.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Optical fiber communication, Fiber optics, Microwave filters, Delay lines, Microwave devices | ||||||||||||
| Journal or Publication Title: | IEEE Access | ||||||||||||
| Publisher: | IEEE | ||||||||||||
| ISSN: | 2169-3536 | ||||||||||||
| Official Date: | 6 July 2020 | ||||||||||||
| Dates: |
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| Volume: | 8 | ||||||||||||
| Page Range: | pp. 135176-135183 | ||||||||||||
| DOI: | 10.1109/ACCESS.2020.3007169 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Open Access | ||||||||||||
| RIOXX Funder/Project Grant: |
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