Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon Waveguide
Mode division multiplexing (MDM) technology is becoming increasingly important for modern optical communication systems. Here, an ultra-compact broadband in-line mode converter for quasi-TE<sub>00</sub> and quasi-TE<sub>10</sub> on the silicon-on-insulator platform is propose...
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| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9380381/ |
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| author | Ze Chen Tianying Lin Xiaoping Liu Haibin Lv |
| author_facet | Ze Chen Tianying Lin Xiaoping Liu Haibin Lv |
| author_sort | Ze Chen |
| collection | DOAJ |
| description | Mode division multiplexing (MDM) technology is becoming increasingly important for modern optical communication systems. Here, an ultra-compact broadband in-line mode converter for quasi-TE<sub>00</sub> and quasi-TE<sub>10</sub> on the silicon-on-insulator platform is proposed and demonstrated experimentally. In our device, the mode-conversion region consists of a continuously width-modulated waveguide with a footprint size as small as 1.32 × 4.52 μm<sup>2</sup>. Its modulation profile is designed by using the particle swarm optimization algorithm. This device has a simulated conversion efficiency of about −0.174 dB and an insertion loss less than 0.153 dB within 100-nm wavelength bandwidth from 1500 nm to 1600 nm. Our design exhibits a favorable fabrication error tolerance and the fabricated device has achieved nearly the same conversion efficiency as the simulated one. Our concept can also be applied to design other high-performance mode converters, i.e., converting modes between quasi-TE<sub>20</sub> and quasi-TE<sub>00</sub>. Our work suggests a very promising path for realizing compact integrated MDM systems. |
| format | Article |
| id | doaj-art-6fa9b3bcee824277a44557a45a91db64 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-6fa9b3bcee824277a44557a45a91db642025-08-20T03:15:50ZengIEEEIEEE Photonics Journal1943-06552021-01-011321710.1109/JPHOT.2021.30661989380381Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon WaveguideZe Chen0https://orcid.org/0000-0002-3623-9756Tianying Lin1Xiaoping Liu2Haibin Lv3https://orcid.org/0000-0002-3064-9818National Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing, ChinaNational Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai, ChinaMode division multiplexing (MDM) technology is becoming increasingly important for modern optical communication systems. Here, an ultra-compact broadband in-line mode converter for quasi-TE<sub>00</sub> and quasi-TE<sub>10</sub> on the silicon-on-insulator platform is proposed and demonstrated experimentally. In our device, the mode-conversion region consists of a continuously width-modulated waveguide with a footprint size as small as 1.32 × 4.52 μm<sup>2</sup>. Its modulation profile is designed by using the particle swarm optimization algorithm. This device has a simulated conversion efficiency of about −0.174 dB and an insertion loss less than 0.153 dB within 100-nm wavelength bandwidth from 1500 nm to 1600 nm. Our design exhibits a favorable fabrication error tolerance and the fabricated device has achieved nearly the same conversion efficiency as the simulated one. Our concept can also be applied to design other high-performance mode converters, i.e., converting modes between quasi-TE<sub>20</sub> and quasi-TE<sub>00</sub>. Our work suggests a very promising path for realizing compact integrated MDM systems.https://ieeexplore.ieee.org/document/9380381/Mode converterparticle swarm optimizationsilicon waveguide |
| spellingShingle | Ze Chen Tianying Lin Xiaoping Liu Haibin Lv Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon Waveguide IEEE Photonics Journal Mode converter particle swarm optimization silicon waveguide |
| title | Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon Waveguide |
| title_full | Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon Waveguide |
| title_fullStr | Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon Waveguide |
| title_full_unstemmed | Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon Waveguide |
| title_short | Ultra-Compact Broadband In-Line Mode Converter Based on a Width-Modulated Silicon Waveguide |
| title_sort | ultra compact broadband in line mode converter based on a width modulated silicon waveguide |
| topic | Mode converter particle swarm optimization silicon waveguide |
| url | https://ieeexplore.ieee.org/document/9380381/ |
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