Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIM
Compact and low-loss waveguide devices are highly desired in the development of THz-wave circuits. Nonradiative dielectric (NRD) waveguides having simple structures and very low loss are promising platforms for THz-wave circuits, and previously some basic devices have been reported. As the NRD guide...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10365516/ |
| _version_ | 1797370527910723584 |
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| author | Md. Iquebal Hossain Patwary Akito Iguchi Yasuhide Tsuji |
| author_facet | Md. Iquebal Hossain Patwary Akito Iguchi Yasuhide Tsuji |
| author_sort | Md. Iquebal Hossain Patwary |
| collection | DOAJ |
| description | Compact and low-loss waveguide devices are highly desired in the development of THz-wave circuits. Nonradiative dielectric (NRD) waveguides having simple structures and very low loss are promising platforms for THz-wave circuits, and previously some basic devices have been reported. As the NRD guide has a non-radiative nature, the NRD grating bandpass filters that have been reported for millimeter-wave circuits are more suitable to design in THz-wave range. In this paper, we present THz NRD grating bandpass filters and develop an efficient optimal design method to realize these devices based on genetic algorithm (GA) and effective index method (EIM). The optimized device achieved the desired flat top transmission band within the aimed frequency range with only 0.46 dB of avg. IL in the passband, where the reflection in the passband is better than −20 dB. The results obtained with EIM are also verified by three-dimensional finite element method (3D-FEM). The fabrication tolerance of the proposed devices has also been discussed in detail. |
| first_indexed | 2024-03-08T18:03:45Z |
| format | Article |
| id | doaj.art-d35aa2f156c145bfb5d6b2a900f1d8fe |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-03-08T18:03:45Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-d35aa2f156c145bfb5d6b2a900f1d8fe2024-01-02T00:00:31ZengIEEEIEEE Photonics Journal1943-06552024-01-011611910.1109/JPHOT.2023.334460810365516Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIMMd. Iquebal Hossain Patwary0https://orcid.org/0009-0001-6671-3121Akito Iguchi1https://orcid.org/0000-0002-5210-7243Yasuhide Tsuji2https://orcid.org/0000-0001-5213-6522Muroran Institute of Technology, Muroran, JapanMuroran Institute of Technology, Muroran, JapanMuroran Institute of Technology, Muroran, JapanCompact and low-loss waveguide devices are highly desired in the development of THz-wave circuits. Nonradiative dielectric (NRD) waveguides having simple structures and very low loss are promising platforms for THz-wave circuits, and previously some basic devices have been reported. As the NRD guide has a non-radiative nature, the NRD grating bandpass filters that have been reported for millimeter-wave circuits are more suitable to design in THz-wave range. In this paper, we present THz NRD grating bandpass filters and develop an efficient optimal design method to realize these devices based on genetic algorithm (GA) and effective index method (EIM). The optimized device achieved the desired flat top transmission band within the aimed frequency range with only 0.46 dB of avg. IL in the passband, where the reflection in the passband is better than −20 dB. The results obtained with EIM are also verified by three-dimensional finite element method (3D-FEM). The fabrication tolerance of the proposed devices has also been discussed in detail.https://ieeexplore.ieee.org/document/10365516/Nonradiative dielectric waveguidegrating bandpass filtergenetic algorithmeffective index methodfull-vectorial finite element methodthree-dimensional finite element method |
| spellingShingle | Md. Iquebal Hossain Patwary Akito Iguchi Yasuhide Tsuji Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIM IEEE Photonics Journal Nonradiative dielectric waveguide grating bandpass filter genetic algorithm effective index method full-vectorial finite element method three-dimensional finite element method |
| title | Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIM |
| title_full | Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIM |
| title_fullStr | Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIM |
| title_full_unstemmed | Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIM |
| title_short | Optimal Design of NRD Grating Bandpass Filters for THz Application Using GA and EIM |
| title_sort | optimal design of nrd grating bandpass filters for thz application using ga and eim |
| topic | Nonradiative dielectric waveguide grating bandpass filter genetic algorithm effective index method full-vectorial finite element method three-dimensional finite element method |
| url | https://ieeexplore.ieee.org/document/10365516/ |
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