Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating
An ultra-broadband optical filter based on step-chirped multimode waveguide Bragg grating (SCMWBG) with low insertion loss, high sidelobe suppression ratio (SLSR), compact size and relaxed fabrication accuracy is demonstrated on SOI platform. The grating length of SCMWBG is divided into grating segm...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10188851/ |
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| author | Nannan Ning Qiang Zhang Zhujun Wei Qikai Huang Penghui Xia Yuehai Wang Jianyi Yang Hui Yu |
| author_facet | Nannan Ning Qiang Zhang Zhujun Wei Qikai Huang Penghui Xia Yuehai Wang Jianyi Yang Hui Yu |
| author_sort | Nannan Ning |
| collection | DOAJ |
| description | An ultra-broadband optical filter based on step-chirped multimode waveguide Bragg grating (SCMWBG) with low insertion loss, high sidelobe suppression ratio (SLSR), compact size and relaxed fabrication accuracy is demonstrated on SOI platform. The grating length of SCMWBG is divided into grating segments with constant periods, and the period of each segment increases in a fixed step length of 1 nm. Each grating segment of the proposed SCMWBG is designed according to the phase-matching condition. The device is fabricated by a 193 nm DUV lithography, and employs complementary lateral-misalignment apodization to suppress the sidelobes. The measured insertion loss, SLSR and 3-dB bandwidth of fabricated SCMWBG are 1.2 dB, 17 dB and 72 nm, respectively. |
| format | Article |
| id | doaj-art-8fdf3b462b2d4e1c8ffe3c430b1b5b5a |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-8fdf3b462b2d4e1c8ffe3c430b1b5b5a2025-08-20T03:44:02ZengIEEEIEEE Photonics Journal1943-06552025-01-011751510.1109/JPHOT.2023.329710810188851Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg GratingNannan Ning0Qiang Zhang1https://orcid.org/0009-0005-8145-9837Zhujun Wei2Qikai Huang3Penghui Xia4https://orcid.org/0000-0002-0821-9491Yuehai Wang5https://orcid.org/0000-0002-5084-0572Jianyi Yang6https://orcid.org/0000-0002-3142-5015Hui Yu7https://orcid.org/0000-0002-5605-0950College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, ChinaZhejiang Lab, Hangzhou, ChinaCollege of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, ChinaCollege of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, ChinaCollege of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, ChinaCollege of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, ChinaCollege of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, ChinaZhejiang Lab, Hangzhou, ChinaAn ultra-broadband optical filter based on step-chirped multimode waveguide Bragg grating (SCMWBG) with low insertion loss, high sidelobe suppression ratio (SLSR), compact size and relaxed fabrication accuracy is demonstrated on SOI platform. The grating length of SCMWBG is divided into grating segments with constant periods, and the period of each segment increases in a fixed step length of 1 nm. Each grating segment of the proposed SCMWBG is designed according to the phase-matching condition. The device is fabricated by a 193 nm DUV lithography, and employs complementary lateral-misalignment apodization to suppress the sidelobes. The measured insertion loss, SLSR and 3-dB bandwidth of fabricated SCMWBG are 1.2 dB, 17 dB and 72 nm, respectively.https://ieeexplore.ieee.org/document/10188851/Silicon photonicswavelength filtering devicesstep-chirpedwaveguide bragg grating |
| spellingShingle | Nannan Ning Qiang Zhang Zhujun Wei Qikai Huang Penghui Xia Yuehai Wang Jianyi Yang Hui Yu Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating IEEE Photonics Journal Silicon photonics wavelength filtering devices step-chirped waveguide bragg grating |
| title | Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating |
| title_full | Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating |
| title_fullStr | Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating |
| title_full_unstemmed | Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating |
| title_short | Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating |
| title_sort | ultra broadband optical filter based on step chirped multimode waveguide bragg grating |
| topic | Silicon photonics wavelength filtering devices step-chirped waveguide bragg grating |
| url | https://ieeexplore.ieee.org/document/10188851/ |
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