Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Asia Communications and Photonics Conference (ACPC) 2019
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper S4H.6

Non-volatile integrated-silicon-photonic switches using phase-change materials

Not Accessible

Your library or personal account may give you access

Abstract

Current Mach–Zehnder switches primarily rely on the weak modulation of the refractive index (usually ∆n < 0.01) from the free-carrier dispersion or thermo-optic effects, resulting in a large footprintand high power consumption. By utilizing the dramatic difference in the optical refractive index and extinction coefficient between the crystalline and amorphous phases of Ge2Sb2Te5 (GST), we demonstrate an all-optical nonvolatile switch in microring resonators with extinction ratio up to 33 dB. To extent the operating bandwidth, we demonstrate compact (~30 µm), low-loss (~1dB), and broadband (over 30 nm with CT < –10 dB) 1 × 2 and 2 × 2 photonic switches using the PCM, based on the asymmetric directional coupler (DC) switch design bypassing the high loss associated with the crystalline state. GST possees much lower values of extinction coefficient in the wavelength region of >2 µm.

© 2019 The Author(s)

PDF Article
More Like This
Broadband Low-loss Non-volatile Photonic Switches Using Phase-Change Materials

Jiajiu Zheng, Peipeng Xu, Jonathan Doylend, and Arka Majumdar
STh1N.5 CLEO: Science and Innovations (CLEO:S&I) 2019

Non-volatile silicon photonic switches based on phase change materials

Arka Majumdar
JTu2P.1 CLEO: Applications and Technology (CLEO:A&T) 2021

Ge2Sb2Te5 integrated silicon photonics

Jiajiu Zheng, Peipeng Xu, Jonathan Doylend, and Arka Majumdar
NoW2B.3 Novel Optical Materials and Applications (NOMA) 2019

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved