Open Access
Optical Materials Express, volume 8, issue 6, pages 1551
GST-on-silicon hybrid nanophotonic integrated circuits: a non-volatile quasi-continuously reprogrammable platform
Jiajiu Zheng
1
,
Amey Khanolkar
2
,
Peipeng Xu
1
,
Shane Colburn
1
,
Sanchit Deshmukh
3
,
Jason Myers
4
,
Jesse Frantz
4
,
Eric Pop
3
,
Joshua Hendrickson
5
,
Jonathan Doylend
6
,
Nicholas Boechler
7
,
Arka Majumdar
1
5
Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, OH 45433, USA
|
6
Silicon Photonic Products Division, Intel Corporation, Santa Clara, CA 95054, USA
|
Publication type: Journal Article
Publication date: 2018-05-17
Journal:
Optical Materials Express
scimago Q2
SJR: 0.662
CiteScore: 5.5
Impact factor: 2.8
ISSN: 21593930
Electronic, Optical and Magnetic Materials
Abstract
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.
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