A general design approach for inverted tapers

Yuxin Liang; Zhizhou Lu; Zhihui Li; Zhonghua Yang; Junbo Feng; Naidi Cui

doi:10.1117/12.2647083

23 January 2023 A general design approach for inverted tapers

Yuxin Liang, Zhizhou Lu, Zhihui Li, Zhonghua Yang, Junbo Feng, Naidi Cui

Proceedings Volume 12556, AOPC 2022: Optoelectronics and Nanophotonics; 125560P (2023) https://doi.org/10.1117/12.2647083
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

An original design approach for inverted tapers based on effective mode area (EMA) control is proposed. It has been demonstrated that the inverted taper with constant loss as a function of position along the taper is most efficient. First, a general equation which can satisfy this constant loss condition is derived between EMA and the position within the taper. EMA can be controlled by adjusting the waveguide width. Introducing the relationship between EMA and waveguide width into this equation, an optimal profile for the inverted taper is obtained. The design approach is illustrated by applying it to an ideal SOI inverted taper. The conversion loss of the designed inverted taper can be reduced by 60% and 78% compared to parabolic and linear inverted tapers, respectively, when the taper length is 300 μm.

Citation Download Citation

Yuxin Liang, Zhizhou Lu, Zhihui Li, Zhonghua Yang, Junbo Feng, and Naidi Cui "A general design approach for inverted tapers", Proc. SPIE 12556, AOPC 2022: Optoelectronics and Nanophotonics, 125560P (23 January 2023); https://doi.org/10.1117/12.2647083

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KEYWORDS

Waveguides

Wave propagation

Silicon photonics

Single mode fibers

Magnetism

Optical simulations

Lutetium

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