Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 34, Issue 7, Pages 359-362Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2022.3159830
Keywords
Optical waveguides; Optimization; Silicon; Performance evaluation; Optical refraction; Optical device fabrication; Optical design; Optical waveguides; silicon photonics
Funding
- Japan Society for the Promotion of Science [20J11564]
- Grants-in-Aid for Scientific Research [20J11564] Funding Source: KAKEN
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This paper proposes a novel wavefront-matching algorithm for the design of silicon waveguides, addressing the instability issue of conventional methods in high-index contrast. The effectiveness of the proposed method is demonstrated through detailed design examples, achieving high conversion efficiency for mode converters.
We propose a novel algorithm of a wavefront-matching (WFM) method for the design of silicon waveguides. A conventional WFM method may not provide a stable design of silicon waveguides because of its high-index contrast. In the proposed method, a proper constraint is imposed on a conventional method depending on the device performance. Effectiveness of the proposed method is demonstrated through the design of TE0-TE1 mode converter (MC) in detail. The conversion efficiency of the TE0-TE1 MC is -0.52 dB at the wavelength of 1550 nm. As another example, TE0-TE2 MC was designed by the proposed method to additionally demonstrate its effectiveness.
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