On the response of the Taiji microresonator against small perturbation of the counter propagating mode

Riccardo Franchi; Stefano Biasi; Filippo Mione; Lorenzo Pavesi

doi:10.1117/12.2608157

5 March 2022 On the response of the Taiji microresonator against small perturbation of the counter propagating mode

Riccardo Franchi, Stefano Biasi, Filippo Mione, Lorenzo Pavesi

Proceedings Volume 12004, Integrated Optics: Devices, Materials, and Technologies XXVI; 1200406 (2022) https://doi.org/10.1117/12.2608157
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

In this work, we study the eigenvalues and eigenvectors of a taiji microresonator that is made by a ring cavity with an embedded S-shaped waveguide. Specifically, we demonstrated that this system works on an exceptional point. This strongly affects the behaviour against perturbation of the counterpropagating modes inducing a peculiar splitting of the single Lorentzian transmission spectra. Precisely, we show that this splitting is proportional to the square root of the perturbation strength. Therefore, the taiji exhibits a higher sensitivity to a small perturbation with respect to a typical microresonator which shows a linear splitting.

Conference Presentation

Citation Download Citation

Riccardo Franchi, Stefano Biasi, Filippo Mione, and Lorenzo Pavesi "On the response of the Taiji microresonator against small perturbation of the counter propagating mode", Proc. SPIE 12004, Integrated Optics: Devices, Materials, and Technologies XXVI, 1200406 (5 March 2022); https://doi.org/10.1117/12.2608157

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