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arXiv · 2211.09453

Spatio-temporal isolator in lithium niobate on insulator

Haijin Huang·Armandas Balcytis·Aditya Dubey·Andreas Boes·Thach G. Nguyen·Guanghui Ren·Mengxi Tan·Arnan Mitchell
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Abstract

In this contribution, we simulate, design, and experimentally demonstrate an integrated optical isolator based on spatiotemporal modulation in the thin-film lithium niobate on insulator waveguide platform. We used two cascaded travelling wave phase modulators for spatiotemporal modulation and a ring resonator as a wavelength filter to suppress the sidebands of the reverse propagating light. This enabled us to achieve an isolation of 27 dB. The demonstrated suppression of the reverse propagating light makes such isolators suitable for the integration with III-V laser diodes and Erbium doped gain sections in the thin-film lithium niobate on insulator waveguide platform.

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Haijin Huang, Armandas Balcytis, Aditya Dubey, Andreas Boes, Thach G. Nguyen, Guanghui Ren, Mengxi Tan, Arnan Mitchell. 2022-11-17. Spatio-temporal isolator in lithium niobate on insulator. https://doi.org/10.29026/oes.2023.220022

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