Microring Resonators Coupling Tunability by Heterogeneous 2D Material Integration
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.
Cite
@article{arxiv.1807.03945,
title = {Microring Resonators Coupling Tunability by Heterogeneous 2D Material Integration},
author = {Rishi Maiti and Rohit Hemnani and Rubab Amin and Zhizhen Ma and Mohammad Tahersima and Thomas A. Empante and Hamed Dalir and Ritesh Agarwal and Ludwig Bartels and Volker J. Sorger},
journal= {arXiv preprint arXiv:1807.03945},
year = {2018}
}