All-optical nonreciprocity and isolation in a ring resonator integrating transition metal dichalcogenides

Yuma Kawaguchi; Sriram Guddala; Filipp Komissarenko; Svetlana Kiriushechkina; Anton Vakulenko; Kai Chen; Andrea Alù; Vinod M. Menon; Alexander B. Khanikaev

doi:10.1117/12.2632372

3 October 2022 All-optical nonreciprocity and isolation in a ring resonator integrating transition metal dichalcogenides

Yuma Kawaguchi, Sriram Guddala, Filipp Komissarenko, Svetlana Kiriushechkina, Anton Vakulenko, Kai Chen, Andrea Alù, Vinod M. Menon, Alexander B. Khanikaev

Author Affiliations +

Proceedings Volume PC12196, Active Photonic Platforms 2022; PC121960N (2022) https://doi.org/10.1117/12.2632372
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

The WS2 monolayer encapsulated in two thin hBN layers was pumped at room temperature by a circularly polarized laser in order to excite one of the valleys (K or K’ valley). The refractivity spectra measured using both left- and right- CP probe with low intensity, revealed the nonreciprocal response at exciton resonance wavelength. Based on this effect, we propose a novel design of an isolator containing SiN ring resonator integrating an asymmetrically places WS2 monolayer. By applying the coupled mode theory and parameter extracted from the experiment, the isolation of the device was estimated to be ~20dB.

Conference Presentation

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Yuma Kawaguchi, Sriram Guddala, Filipp Komissarenko, Svetlana Kiriushechkina, Anton Vakulenko, Kai Chen, Andrea Alù, Vinod M. Menon, and Alexander B. Khanikaev "All-optical nonreciprocity and isolation in a ring resonator integrating transition metal dichalcogenides", Proc. SPIE PC12196, Active Photonic Platforms 2022, PC121960N (3 October 2022); https://doi.org/10.1117/12.2632372

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