Wideband switch enhanced by photonic crystal waveguide with graphene nanosheet heater

Xiaoxu Chen; Hao Zhou; Yukuan Ma; Jiagui Wu; Jinghui Yang; Mingbin Yu; Dim-lee Kwong; Shouhuan Zhou; Chee Wei Wong

Results in Physics (Jul 2021)

Wideband switch enhanced by photonic crystal waveguide with graphene nanosheet heater

Xiaoxu Chen,
Hao Zhou,
Yukuan Ma,
Jiagui Wu,
Jinghui Yang,
Mingbin Yu,
Dim-lee Kwong,
Shouhuan Zhou,
Chee Wei Wong

Affiliations

Xiaoxu Chen: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Hao Zhou: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China; Corresponding author.
Yukuan Ma: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Jiagui Wu: Mesoscopic Optics and Quantum Electronics Laboratory, University of California, Los Angeles, CA 90095, United States; College of Artificial Intelligence, Southwest University, Chongqing 400715, China
Jinghui Yang: Mesoscopic Optics and Quantum Electronics Laboratory, University of California, Los Angeles, CA 90095, United States
Mingbin Yu: Institute of Microelectronics, Singapore 117685, Singapore; Shanghai Institute of Microsystem and Information Technology, and Shanghai Industrial Technology Research Institute, Shanghai 200050, China
Dim-lee Kwong: Institute of Microelectronics, Singapore 117685, Singapore
Shouhuan Zhou: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Chee Wei Wong: Mesoscopic Optics and Quantum Electronics Laboratory, University of California, Los Angeles, CA 90095, United States

Journal volume & issue: Vol. 26
p. 104434

Abstract

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A compact wideband optical switch assisted by graphene nanosheet heater is demonstrated by shifting the bandedge of the photonic crystal waveguides (PhCWG) through current-induced heating. The high heating efficiency of graphene and the high light-matter interactions in slow-light PhCWG are combined to enhance the heating efficiency and extinction ratio. The extinction ratio is increased from 15 dB to 22 dB and the tuning bandwidth is up to 20 nm with only 28 K temperature change. Our measurements match well with simulation results, suggesting an effective way for CMOS compatible chip-scale integrated graphene microheater switch.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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