GST-on-silicon hybrid nanophotonic integrated circuits: a non-volatile quasi-continuously reprogrammable platform

Reconfiguration of silicon photonic integrated circuits relying on the weak, volatile thermo-optic or electro-optic effect of silicon usually suffers from a large footprint and energy consumption. Here, integrating a phase-change material, Ge2Sb2Te5 (GST) with silicon microring resonators, we demons...

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Bibliographic Details
Published in:Optical materials express 2018-06, Vol.8 (6), p.1551
Main Authors: Zheng, Jiajiu, Khanolkar, Amey, Xu, Peipeng, Colburn, Shane, Deshmukh, Sanchit, Myers, Jason, Frantz, Jesse, Pop, Eric, Hendrickson, Joshua, Doylend, Jonathan, Boechler, Nicholas, Majumdar, Arka
Format: Article
Language:English
Subjects:
Attenuation
Broadband
Energy consumption
Integrated circuits
Optical switching
Optics
Phase change materials
Phase modulation
Photonics
Reconfiguration
Silicon
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Summary:Reconfiguration of silicon photonic integrated circuits relying on the weak, volatile thermo-optic or electro-optic effect of silicon usually suffers from a large footprint and energy consumption. Here, integrating a phase-change material, Ge2Sb2Te5 (GST) with silicon microring resonators, we demonstrate an energy-efficient, compact, non-volatile, reprogrammable platform. By adjusting the energy and number of free-space laser pulses applied to the GST, we characterize the strong broadband attenuation and optical phase modulation effects of the platform, and perform quasi-continuous tuning enabled by thermo-optically-induced phase changes. As a result, a non-volatile optical switch with a high extinction ratio, as large as 33 dB, is demonstrated.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.8.001551