Low-Loss Integrated Nanophotonic Circuits with Layered Semiconductor Materials.

He, Jijun; Paradisanos, Ioannis; Liu, Tianyi; Cadore, Alisson R; Liu, Junqiu; Churaev, Mikhail; Wang, Rui Ning; Raja, Arslan S et al. · Nano Lett · 2021

basic_science · Level V

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Abstract

Monolayer transition-metal dichalcogenides with direct bandgaps are emerging candidates for optoelectronic devices, such as photodetectors, light-emitting diodes, and electro-optic modulators. Here we report a low-loss integrated platform incorporating molybdenum ditelluride monolayers with silicon nitride photonic microresonators. We achieve microresonator quality factors >3 × 10<sup>6</sup> in the telecommunication O- to E-bands. This paves the way for low-loss, hybrid photonic integrated circuits with layered semiconductors, not requiring heterogeneous wafer bonding.