Comb dynamics in photonic crystal microresonators with built-in nonlinear optical isolator on single-layer deposited silicon nitride

Jakob Grzesik; Geun Ho Ahn; Alexander D. White; Jelena Vuckovic

doi:10.1117/12.3000587

13 March 2024 Comb dynamics in photonic crystal microresonators with built-in nonlinear optical isolator on single-layer deposited silicon nitride

Jakob Grzesik, Geun Ho Ahn, Alexander D. White, Jelena Vuckovic

Author Affiliations +

Proceedings Volume PC12871, Laser Resonators, Microresonators, and Beam Control XXVI; PC128710A (2024) https://doi.org/10.1117/12.3000587
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Nonlinear frequency generation is demonstrated in silicon nitride photonics using microring resonators with engineered dispersion through a Bragg grating perturbation. The processes by which these nonlinear effects occur introduces backscattered light, due to bidirectionally-propagating hybridized modes. Such backscattered light is often detrimental to the pump laser and imposes a limit on the power that can be delivered to the ring system, reducing the operating range of ring resonators for nonlinear light generation. We mitigate these effects with an on-chip passive optical isolator, which protects the pump laser from backscattered light, allowing for higher pump power operation regimes. Furthermore, we introduce a recycling channel that allows for power to be re-pumped into the mirroring resonator to enable controllable exploration into more interesting nonlinear optics phenomena.

Conference Presentation

Citation Download Citation

Jakob Grzesik, Geun Ho Ahn, Alexander D. White, and Jelena Vuckovic "Comb dynamics in photonic crystal microresonators with built-in nonlinear optical isolator on single-layer deposited silicon nitride", Proc. SPIE PC12871, Laser Resonators, Microresonators, and Beam Control XXVI, PC128710A (13 March 2024); https://doi.org/10.1117/12.3000587

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