Robust Light Coupling in a Quadratically Bent Directional Coupler

Shuo Yen Tseng

doi:10.1109/LPT.2021.3063486

Robust Light Coupling in a Quadratically Bent Directional Coupler

Shuo Yen Tseng

光電科學與工程學系

研究成果: Article › 同行評審

4 引文斯高帕斯（Scopus）

摘要

Bending the axis of an optical directional coupler can result in phase mismatch between the evanescently coupled waveguides. Using a quadratic bending profile, we realize the phase mismatch with a sign flip scheme for robust light coupling between the waveguides. We derive an analytical solution for the coupling scheme and show its robustness against parameter variations. Beam propagation method solution of the scalar wave equation verifies the two-level analysis and the device robustness.

原文	English
文章編號	9367204
頁（從 - 到）	343-346
頁數	4
期刊	IEEE Photonics Technology Letters
卷	33
發行號	7
DOIs	https://doi.org/10.1109/LPT.2021.3063486
出版狀態	Published - 2021 4月 1

All Science Journal Classification (ASJC) codes

電子、光磁材料
原子與分子物理與光學
電氣與電子工程

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10.1109/LPT.2021.3063486

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note = "Funding Information: Manuscript received December 7, 2020; revised January 15, 2021; accepted February 28, 2021. Date of publication March 2, 2021; date of current version March 9, 2021. This work was supported by the Ministry of Science and Technology, Taiwan under Grant 108-2221-E-006-204-MY3 and Grant 109-2224-E-992-001. Publisher Copyright: {\textcopyright} 1989-2012 IEEE.",

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N2 - Bending the axis of an optical directional coupler can result in phase mismatch between the evanescently coupled waveguides. Using a quadratic bending profile, we realize the phase mismatch with a sign flip scheme for robust light coupling between the waveguides. We derive an analytical solution for the coupling scheme and show its robustness against parameter variations. Beam propagation method solution of the scalar wave equation verifies the two-level analysis and the device robustness.

AB - Bending the axis of an optical directional coupler can result in phase mismatch between the evanescently coupled waveguides. Using a quadratic bending profile, we realize the phase mismatch with a sign flip scheme for robust light coupling between the waveguides. We derive an analytical solution for the coupling scheme and show its robustness against parameter variations. Beam propagation method solution of the scalar wave equation verifies the two-level analysis and the device robustness.

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Robust Light Coupling in a Quadratically Bent Directional Coupler

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