Ultrafast operation of Si thermo-optic switch using differential control method

Kohei Iino; Tomohiro Kita

doi:10.35848/1347-4065/aca268

Ultrafast operation of Si thermo-optic switch using differential control method

Kohei Iino, Tomohiro Kita^*

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

To realize fast switching of a few μs and low-power consumption, we apply a differential control method to a thermo-optic Mach-Zehnder interferometer optical switch loaded with a direct-current injection-type phase shifter using multimode interference. We achieve ultrafast switching of several tens of ns, which is considerably higher than the conventional switching speed. With differential control, we demonstrate extremely fast optical switching with τ rise = 36 ns and τ fall = 24 ns. This method can be widely applied to similar devices and can contribute significantly to the speedup of other thermo-optic switches.

Original language	English
Article number	012002
Journal	Japanese journal of applied physics
Volume	62
Issue number	1
DOIs	https://doi.org/10.35848/1347-4065/aca268
Publication status	Published - 2023 Jan 1

Keywords

optical switch
silicon photonics
thermo-optic effect

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.35848/1347-4065/aca268

Cite this

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abstract = "To realize fast switching of a few μs and low-power consumption, we apply a differential control method to a thermo-optic Mach-Zehnder interferometer optical switch loaded with a direct-current injection-type phase shifter using multimode interference. We achieve ultrafast switching of several tens of ns, which is considerably higher than the conventional switching speed. With differential control, we demonstrate extremely fast optical switching with τ rise = 36 ns and τ fall = 24 ns. This method can be widely applied to similar devices and can contribute significantly to the speedup of other thermo-optic switches.",

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N1 - Funding Information: This study was supported in part by the Commissioned Research #1301 of the National Institute of Information and Communications Technology (NICT), Japan, and JSPS KAKENHI Grant Number JP 19H02634. Publisher Copyright: © 2022 The Japan Society of Applied Physics.

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N2 - To realize fast switching of a few μs and low-power consumption, we apply a differential control method to a thermo-optic Mach-Zehnder interferometer optical switch loaded with a direct-current injection-type phase shifter using multimode interference. We achieve ultrafast switching of several tens of ns, which is considerably higher than the conventional switching speed. With differential control, we demonstrate extremely fast optical switching with τ rise = 36 ns and τ fall = 24 ns. This method can be widely applied to similar devices and can contribute significantly to the speedup of other thermo-optic switches.

AB - To realize fast switching of a few μs and low-power consumption, we apply a differential control method to a thermo-optic Mach-Zehnder interferometer optical switch loaded with a direct-current injection-type phase shifter using multimode interference. We achieve ultrafast switching of several tens of ns, which is considerably higher than the conventional switching speed. With differential control, we demonstrate extremely fast optical switching with τ rise = 36 ns and τ fall = 24 ns. This method can be widely applied to similar devices and can contribute significantly to the speedup of other thermo-optic switches.

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KW - thermo-optic effect

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Ultrafast operation of Si thermo-optic switch using differential control method

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Keywords

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