Tunable nanophotonics enabled by chalcogenide phase-change materials

S Abdollahramezani, O Hemmatyar, H Taghinejad… - …, 2020 - degruyter.com
Nanophotonics has garnered intensive attention due to its unique capabilities in molding the
flow of light in the subwavelength regime. Metasurfaces (MSs) and photonic integrated …

Design for quality: reconfigurable flat optics based on active metasurfaces

MY Shalaginov, SD Campbell, S An, Y Zhang… - …, 2020 - degruyter.com
Optical metasurfaces, planar subwavelength nanoantenna arrays with the singular ability to
sculpt wavefront in almost arbitrary manners, are poised to become a powerful tool enabling …

Reconfigurable all-dielectric metalens with diffraction-limited performance

MY Shalaginov, S An, Y Zhang, F Yang, P Su… - Nature …, 2021 - nature.com
Active metasurfaces, whose optical properties can be modulated post-fabrication, have
emerged as an intensively explored field in recent years. The efforts to date, however, still …

ITO-based microheaters for reversible multi-stage switching of phase-change materials: towards miniaturized beyond-binary reconfigurable integrated photonics

H Taghinejad, S Abdollahramezani, AA Eftekhar… - Optics …, 2021 - opg.optica.org
Inducing a large refractive-index change is the holy grail of reconfigurable photonic
structures, a goal that has long been the driving force behind the discovery of new optical …

Tunable absorber embedded with GST mediums and trilayer graphene strip microheaters

M Pourmand, PK Choudhury, MA Mohamed - Scientific reports, 2021 - nature.com
Investigation was made of the optical response of metal-dielectric stacks-based cavity
structures embedded with graphene microheaters for the purpose of perfect absorption. The …

Subwavelength grating waveguide filter based on cladding modulation with a phase-change material grating

SH Badri, SG Farkoush - Applied Optics, 2021 - opg.optica.org
Subwavelength engineering and utilizing phase-change materials with large contrast in their
optical properties have become powerful design tools for integrated silicon photonics …

On-chip sub-wavelength Bragg grating design based on novel low loss phase-change materials

J Faneca, L Trimby, I Zeimpekis, M Delaney… - Optics …, 2020 - opg.optica.org
We propose a reconfigurable and non-volatile Bragg grating in the telecommunication C-
band based on the combination of novel low-loss phase-change materials (specifically …

Photonic independent component analysis using an on-chip microring weight bank

PY Ma, AN Tait, TF de Lima, C Huang, BJ Shastri… - Optics express, 2020 - opg.optica.org
Independent component analysis (ICA) is a general-purpose technique for analyzing multi-
dimensional data to reveal the underlying hidden factors that are maximally independent …

Tunable metasurfaces using phase change materials and transparent graphene heaters

O Abed, L Yousefi - Optics express, 2020 - opg.optica.org
Tunable metasurfaces enable us to dynamically control light at subwavelength scales. Here,
using phase change materials and transparent graphene heaters, a new structure is …

On the reconfigurable phase change medium-based hyperbolic metamaterials

M Pourmand, PK Choudhury - … : Fabrication, Properties, Optics …, 2021 - spiedigitallibrary.org
A glimpse of the efficacy of phase change medium (PCM)-based layered hyperbolic
metamaterial (HMM) was emphasized following the analytical investigation of wave …