Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ES
Rat-race circuit devices are crucial components in the design of THz-wave circuits. Although nonradiative dielectric (NRD) waveguides having simple structures and extremely low loss are promising platforms for THz-wave circuits, it may difficult to realize conventional rat-race devices in NRD platfo...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10552049/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849707753240526848 |
|---|---|
| author | Md. Iquebal Hossain Patwary Tahir Bashir Akito Iguchi Yasuhide Tsuji |
| author_facet | Md. Iquebal Hossain Patwary Tahir Bashir Akito Iguchi Yasuhide Tsuji |
| author_sort | Md. Iquebal Hossain Patwary |
| collection | DOAJ |
| description | Rat-race circuit devices are crucial components in the design of THz-wave circuits. Although nonradiative dielectric (NRD) waveguides having simple structures and extremely low loss are promising platforms for THz-wave circuits, it may difficult to realize conventional rat-race devices in NRD platform due to the appearance of unwanted LSE<inline-formula><tex-math notation="LaTeX">$_{01}$</tex-math></inline-formula> mode in the output ports. Therefore, optimal design of these devices is very essential for THz-wave circuit applications. In this paper, we present topology optimal design of THz NRD rat-race circuit based on function expansion method and covariance matrix adaptation evolution strategy (CMA-ES). The proposed method overcomes the difficulty of appearing unwanted LSE<inline-formula><tex-math notation="LaTeX">$_{01}$</tex-math></inline-formula> mode in the output ports, thus the optimized devices achieved the significant improvement in the device performance in comparison with that of conventional NRD rat-race devices. In addition to the NRD rat-race circuit, a 90<inline-formula><tex-math notation="LaTeX">$^{\circ }$</tex-math></inline-formula> hybrid device is also designed in order to confirm the validity of the proposed design approach. A thorough discussion of the fabrication tolerance of proposed devices has also been conducted in detail. |
| format | Article |
| id | doaj-art-58ca0e8550284765b7a26ec6c6febc3f |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-58ca0e8550284765b7a26ec6c6febc3f2025-08-20T03:15:51ZengIEEEIEEE Photonics Journal1943-06552024-01-0116411210.1109/JPHOT.2024.341111510552049Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ESMd. Iquebal Hossain Patwary0https://orcid.org/0009-0001-6671-3121Tahir Bashir1Akito Iguchi2https://orcid.org/0000-0002-5210-7243Yasuhide Tsuji3https://orcid.org/0000-0001-5213-6522Muroran Institute of Technology, Muroran, JapanNanjing University of Posts and Telecommunications, Nanjing, ChinaMuroran Institute of Technology, Muroran, JapanMuroran Institute of Technology, Muroran, JapanRat-race circuit devices are crucial components in the design of THz-wave circuits. Although nonradiative dielectric (NRD) waveguides having simple structures and extremely low loss are promising platforms for THz-wave circuits, it may difficult to realize conventional rat-race devices in NRD platform due to the appearance of unwanted LSE<inline-formula><tex-math notation="LaTeX">$_{01}$</tex-math></inline-formula> mode in the output ports. Therefore, optimal design of these devices is very essential for THz-wave circuit applications. In this paper, we present topology optimal design of THz NRD rat-race circuit based on function expansion method and covariance matrix adaptation evolution strategy (CMA-ES). The proposed method overcomes the difficulty of appearing unwanted LSE<inline-formula><tex-math notation="LaTeX">$_{01}$</tex-math></inline-formula> mode in the output ports, thus the optimized devices achieved the significant improvement in the device performance in comparison with that of conventional NRD rat-race devices. In addition to the NRD rat-race circuit, a 90<inline-formula><tex-math notation="LaTeX">$^{\circ }$</tex-math></inline-formula> hybrid device is also designed in order to confirm the validity of the proposed design approach. A thorough discussion of the fabrication tolerance of proposed devices has also been conducted in detail.https://ieeexplore.ieee.org/document/10552049/Nonradiative dielectric (NRD) waveguiderat-race circuit90<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$^{\circ }$</tex-math> </inline-formula> </named-content> hybrid devicetopology optimizationfunction expansion methodcovariance matrix adaptation evolution strategy (CMA-ES) |
| spellingShingle | Md. Iquebal Hossain Patwary Tahir Bashir Akito Iguchi Yasuhide Tsuji Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ES IEEE Photonics Journal Nonradiative dielectric (NRD) waveguide rat-race circuit 90<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$^{\circ }$</tex-math> </inline-formula> </named-content> hybrid device topology optimization function expansion method covariance matrix adaptation evolution strategy (CMA-ES) |
| title | Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ES |
| title_full | Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ES |
| title_fullStr | Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ES |
| title_full_unstemmed | Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ES |
| title_short | Optimal Design of THz NRD Rat-Race Circuit Using Function Expansion Based Topology Optimization Method With CMA-ES |
| title_sort | optimal design of thz nrd rat race circuit using function expansion based topology optimization method with cma es |
| topic | Nonradiative dielectric (NRD) waveguide rat-race circuit 90<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$^{\circ }$</tex-math> </inline-formula> </named-content> hybrid device topology optimization function expansion method covariance matrix adaptation evolution strategy (CMA-ES) |
| url | https://ieeexplore.ieee.org/document/10552049/ |
| work_keys_str_mv | AT mdiquebalhossainpatwary optimaldesignofthznrdratracecircuitusingfunctionexpansionbasedtopologyoptimizationmethodwithcmaes AT tahirbashir optimaldesignofthznrdratracecircuitusingfunctionexpansionbasedtopologyoptimizationmethodwithcmaes AT akitoiguchi optimaldesignofthznrdratracecircuitusingfunctionexpansionbasedtopologyoptimizationmethodwithcmaes AT yasuhidetsuji optimaldesignofthznrdratracecircuitusingfunctionexpansionbasedtopologyoptimizationmethodwithcmaes |