A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary Matrices
Programmable optical unitary matrices (POUMs) in photonic integrated circuits (PICs) technology play a critical role in modern information technology. With the expansion of their scale and integration density, POUMs have their performance limited by fabrication errors and tuning phase errors of thei...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10078286/ |
| _version_ | 1797856508993601536 |
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| author | Xianmeng Zhao Cheng Chen Degangao Kong Xiaoping Liu |
| author_facet | Xianmeng Zhao Cheng Chen Degangao Kong Xiaoping Liu |
| author_sort | Xianmeng Zhao |
| collection | DOAJ |
| description | Programmable optical unitary matrices (POUMs) in photonic integrated circuits (PICs) technology play a critical role in modern information technology. With the expansion of their scale and integration density, POUMs have their performance limited by fabrication errors and tuning phase errors of their building blocks, i.e., tunable 2 × 2 optical couplers. Here, we provide an in-depth theoretical analysis of a prior robust equivalent 2 × 2 optical coupler and demonstrate a general requirement of its passive beam splitters' split ratios, under which an arbitrary tunable transmission ratio can always be achieved. More importantly, we analyze the impact of the phase shifters' tuning phase errors which is always caused by the limited voltage/current resolution of the electronic driving interface or thermal fluctuation. By the analyzed result, we propose a novel working scheme for the first time by discovering an unconventional configuration with large beam split ratio errors, under which robust POUMs against fabrication and tuning phase errors can be achieved. |
| first_indexed | 2024-04-09T20:41:32Z |
| format | Article |
| id | doaj.art-ccc097bb748a4b6594ddda9dca6cec0a |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-09T20:41:32Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-ccc097bb748a4b6594ddda9dca6cec0a2023-03-29T23:00:10ZengIEEEIEEE Photonics Journal1943-06552023-01-011521510.1109/JPHOT.2023.326020110078286A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary MatricesXianmeng Zhao0https://orcid.org/0000-0003-3243-9192Cheng Chen1https://orcid.org/0009-0006-9334-9106Degangao Kong2Xiaoping Liu3https://orcid.org/0000-0001-7955-2067Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai, ChinaProgrammable optical unitary matrices (POUMs) in photonic integrated circuits (PICs) technology play a critical role in modern information technology. With the expansion of their scale and integration density, POUMs have their performance limited by fabrication errors and tuning phase errors of their building blocks, i.e., tunable 2 × 2 optical couplers. Here, we provide an in-depth theoretical analysis of a prior robust equivalent 2 × 2 optical coupler and demonstrate a general requirement of its passive beam splitters' split ratios, under which an arbitrary tunable transmission ratio can always be achieved. More importantly, we analyze the impact of the phase shifters' tuning phase errors which is always caused by the limited voltage/current resolution of the electronic driving interface or thermal fluctuation. By the analyzed result, we propose a novel working scheme for the first time by discovering an unconventional configuration with large beam split ratio errors, under which robust POUMs against fabrication and tuning phase errors can be achieved.https://ieeexplore.ieee.org/document/10078286/Programmable optical circuitrobust |
| spellingShingle | Xianmeng Zhao Cheng Chen Degangao Kong Xiaoping Liu A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary Matrices IEEE Photonics Journal Programmable optical circuit robust |
| title | A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary Matrices |
| title_full | A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary Matrices |
| title_fullStr | A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary Matrices |
| title_full_unstemmed | A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary Matrices |
| title_short | A Novel Working Scheme for Robust Optical Coupler Unit for Programable Unitary Matrices |
| title_sort | novel working scheme for robust optical coupler unit for programable unitary matrices |
| topic | Programmable optical circuit robust |
| url | https://ieeexplore.ieee.org/document/10078286/ |
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