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arXiv · 1807.03945

Microring Resonators Coupling Tunability by Heterogeneous 2D Material Integration

Rishi Maiti·Rohit Hemnani·Rubab Amin·Zhizhen Ma·Mohammad Tahersima·Thomas A. Empante·Hamed Dalir·Ritesh Agarwal·Ludwig Bartels·Volker J. Sorger
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Abstract

Atomically thin 2D materials provide a wide range of basic building blocks with unique properties, making them ideal for heterogeneous integration with a mature chip platform. An understanding the role of excitons in transition metal dichalcogenides in Silicon photonic platform is a prerequisite for advances in optical communication technology, signal processing, and possibly computing. Here we demonstrate passive tunable coupling by integrating few layers of MoTe2 on a micro-ring resonator. We find a TMD-to-rings circumference coverage length ratio to place the ring into critical coupling to be about 10% as determined from the variation of spectral resonance visibility and loss as a function of TMD coverage. Using this TMD ring heterostructure, we further demonstrate a semi-empirical method to determine the index of an unknown TMD material (nMoTe2 of 4.36+.011i) near for telecommunication-relevant wavelength.

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Rishi Maiti, Rohit Hemnani, Rubab Amin, Zhizhen Ma, Mohammad Tahersima, Thomas A. Empante, Hamed Dalir, Ritesh Agarwal, Ludwig Bartels, Volker J. Sorger. 2018-07-19. Microring Resonators Coupling Tunability by Heterogeneous 2D Material Integration. https://arxiv.org/abs/1807.03945

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