Gapless optical ring resonator with reduced bending losses based on a step-like structuring

Andrzej Gawlik; Edyta Środa; Katarzyna Komorowska; Tadeusz Martynkien; Jacek M. Olszewski

doi:10.1117/12.2665654

31 May 2023 Gapless optical ring resonator with reduced bending losses based on a step-like structuring

Andrzej Gawlik, Edyta Środa, Katarzyna Komorowska, Tadeusz Martynkien, Jacek M. Olszewski

Proceedings Volume PC12575, Integrated Optics: Design, Devices, Systems and Applications VII; PC1257504 (2023) https://doi.org/10.1117/12.2665654
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

Fabrication of mid-index contrast ring resonators with a well-defined gap is very challenging, while gapless rings suffer from substantial coupling losses. To avoid these issues, we propose a gapless design based on a step-like structuring of the bus/ring waveguides. As we show with numerical simulations, our design allows to spatially confine the modes to the steps formed on the bus/ring waveguides thus mitigating the coupling losses. Additionally, the step on the ring waveguide reduces the bending losses. Finally, we show how varying the heights and widths of the steps allows to tailor the transmittance and quality factor of the ring.

Conference Presentation

Citation Download Citation

Andrzej Gawlik, Edyta Środa, Katarzyna Komorowska, Tadeusz Martynkien, and Jacek M. Olszewski "Gapless optical ring resonator with reduced bending losses based on a step-like structuring", Proc. SPIE PC12575, Integrated Optics: Design, Devices, Systems and Applications VII, PC1257504 (31 May 2023); https://doi.org/10.1117/12.2665654

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