Ultracompact and low-power-consumption silicon thermo-optic switch for high-speed data

Zhang Ruihuan; He Yu; Zhang Yong; An Shaohua; Zhu Qingming; Li Xingfeng; Su Yikai

doi:10.1515/nanoph-2020-0496

Nanophotonics (Nov 2020)

Ultracompact and low-power-consumption silicon thermo-optic switch for high-speed data

Zhang Ruihuan,
He Yu,
Zhang Yong,
An Shaohua,
Zhu Qingming,
Li Xingfeng,
Su Yikai

Affiliations

Zhang Ruihuan: Department of Electronic Engineering, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai200240, China
He Yu: Department of Electronic Engineering, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai200240, China
Zhang Yong: Department of Electronic Engineering, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai200240, China
An Shaohua: Department of Electronic Engineering, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai200240, China
Zhu Qingming: Department of Electronic Engineering, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai200240, China
Li Xingfeng: Department of Electronic Engineering, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai200240, China
Su Yikai: Department of Electronic Engineering, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai200240, China

DOI: https://doi.org/10.1515/nanoph-2020-0496
Journal volume & issue: Vol. 10, no. 2
pp. 937 – 945

Abstract

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Ultracompact and low-power-consumption optical switches are desired for high-performance telecommunication networks and data centers. Here, we demonstrate an on-chip power-efficient 2 × 2 thermo-optic switch unit by using a suspended photonic crystal nanobeam structure. A submilliwatt switching power of 0.15 mW is obtained with a tuning efficiency of 7.71 nm/mW in a compact footprint of 60 μm × 16 μm. The bandwidth of the switch is properly designed for a four-level pulse amplitude modulation signal with a 124 Gb/s raw data rate. To the best of our knowledge, the proposed switch is the most power-efficient resonator-based thermo-optic switch unit with the highest tuning efficiency and data ever reported.

Published in Nanophotonics

ISSN: 2192-8606 (Print); 2192-8614 (Online)
Publisher: De Gruyter
Country of publisher: Germany
LCC subjects: Science: Physics
Website: https://www.degruyter.com/journal/key/nanoph/html#submit

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