730 citations · 3.4k across the 39 of their papers we have counts for
39 papers
An Open-Source Multi-functional Testing Platform for Optical Phase Change Materials
Cosmin-Constantin Popescu, Khoi Phuong Dao, Luigi Ranno +18
Owing to their unique tunable optical properties, chalcogenide phase change materials are increasingly being investigated for optics and photonics applications. However, in situ ch…
Nonvolatile Tuning of Bragg Structures Using Transparent Phase-Change Materials
Nicholas A. Nobile, Chuanyu Lian, Hongyi Sun +7
Bragg gratings offer high-performance filtering and routing of light on-chip through a periodic modulation of a waveguide's effective refractive index. Here, we model and experimen…
Toward accurate thermal modeling of phase change material based photonic devices
Kiumars Aryana, Hyun Jung Kim, Cosmin-Constantin Popescu +5
Reconfigurable or programmable photonic devices are rapidly growing and have become an integral part of many optical systems. The ability to selectively modulate electromagnetic wa…
Multi-material heterogeneous integration on a 3-D Photonic-CMOS platform
Luigi Ranno, Jia Xu Brian Sia, Khoi Phuong Dao +1
Photonics has been one of the primary beneficiaries of advanced silicon manufacturing. By leveraging on mature complementary metal-oxide-semiconductor (CMOS) process nodes, unprece…
Time-resolved temperature mapping leveraging the strong thermo-optic effect in phase-change devices
Nicholas A. Nobile, John R. Erickson, Carlos Ríos +5
Optical phase-change materials are highly promising for emerging applications such as tunable metasurfaces, reconfigurable photonic circuits, and non-von Neumann computing. However…
Reconfigurable Application-Specific Photonic Integrated Circuit for solving Partial Differential Equations
Chen Shen, Nicola Peserico, Jiawei Meng +7
Solving mathematical equations faster and more efficiently has been a Holy Grail for centuries for scientists and engineers across all disciplines. While electronic digital circuit…
Active metasurfaces: lighting the path to commercial success
Tian Gu, Hyun Jung Kim, Clara Rivero-Baleine +1
Active optical metasurfaces are rapidly emerging as a major frontier in photonics research, development, and commercialization. They promise compact, light-weight, and energy-effic…
Magnet-free nonreciprocal metasurface for on-demand bi-directional phase modulation
Weihao Yang, Jun Qin, Jiawei Long +8
Unconstrained by Lorentz reciprocity, nonreciprocal metasurfaces are uniquely capable of encoding distinctive optical functions on forward- and backward-propagating waves. The nonr…
Electrical Programmable Multi-Level Non-volatile Photonic Random-Access Memory
Jiawei Meng, Yaliang Gui, Behrouz Movahhed Nouri +11
Photonic Random-Access Memories (P-RAM) are an essential component for the on-chip non-von Neumann photonic computing by eliminating optoelectronic conversion losses in data links.…
Waveguide-Integrated Mid-Infrared Photodetection using Graphene on a Scalable Chalcogenide Glass Platform
Jordan Goldstein, Hongtao Lin, Skylar Deckoff-Jones +7
The development of compact and fieldable mid-infrared (mid-IR) spectroscopy devices represents a critical challenge for distributed sensing with applications from gas leak detectio…
Free-form micro-optics enabling ultra-broadband low-loss fiber-to-chip coupling
Shaoliang Yu, Luigi Ranno, Qingyang Du +5
Efficient fiber-to-chip coupling has been a major hurdle to cost-effective packaging and scalable interconnections of photonic integrated circuits. Conventional photonic packaging…
Wide field-of-view flat lens: an analytical formalism
Fan Yang, Sensong An, Mikhail Y. Shalaginov +3
Wide field-of-view (FOV) optics are widely used in various imaging, display, and sensing applications. While conventional wide FOV optics rely on cascading multiple elements to sup…
Ultra-compact nonvolatile phase shifter based on electrically reprogrammable transparent phase change materials
Carlos Ríos, Qingyang Du, Yifei Zhang +9
Energy-efficient programmable photonic integrated circuits (PICs) are the cornerstone of on-chip classical and quantum optical technologies. Optical phase shifters constitute the f…
Deep Convolutional Neural Networks to Predict Mutual Coupling Effects in Metasurfaces
Sensong An, Bowen Zheng, Mikhail Y. Shalaginov +13
Metasurfaces have provided a novel and promising platform for the realization of compact and large-scale optical devices. The conventional metasurface design approach assumes perio…
Topology Optimization of Surface-enhanced Raman Scattering Substrates
Ying Pan, Rasmus E. Christiansen, Jerome Michon +2
Surface-enhanced Raman spectroscopy is a powerful and versatile sensing method with a detection limit down to the single molecule level. In this article, we demonstrate how topolog…
Electrically Reconfigurable Nonvolatile Metasurface Using Low-Loss Optical Phase Change Material
Yifei Zhang, Clayton Fowler, Junhao Liang +14
Active metasurfaces promise reconfigurable optics with drastically improved compactness, ruggedness, manufacturability, and functionality compared to their traditional bulk counter…
Nonlinear Mid-infrared Metasurface based on a Phase-Change Material
Fuyong Yue, Riccardo Piccoli, Mikhail Y. Shalaginov +5
The mid-wave infrared (MWIR) spectral region (3-5 μm) is important to a vast variety of applications in imaging, sensing, spectroscopy, surgery, and optical communications. Efficie…
Magneto-Optical Properties of InSb for Infrared Spectral Filtering
Nolan Peard, Dennis Callahan, Joy C. Perkinson +7
We present measurements of the Faraday effect in n-type InSb. The Verdet coefficient was determined for a range of carrier concentrations near in the …
Multi-level Electro-thermal Switching of Optical Phase-Change Materials Using Graphene
Carlos Ríos, Yifei Zhang, Mikhail Shalaginov +13
Reconfigurable photonic systems featuring minimal power consumption are crucial for integrated optical devices in real-world technology. Current active devices available in foundri…
A Freeform Dielectric Metasurface Modeling Approach Based on Deep Neural Networks
Sensong An, Bowen Zheng, Mikhail Y. Shalaginov +12
Metasurfaces have shown promising potentials in shaping optical wavefronts while remaining compact compared to bulky geometric optics devices. Design of meta-atoms, the fundamental…
Artificial Synapse with Mnemonic Functionality using GSST-based Photonic Integrated Memory
Mario Miscuglio, Jiawei Meng, Omer Yesiliurt +6
Machine-learning tasks performed by neural networks demonstrated useful capabilities for producing reliable, and repeatable intelligent decisions. Integrated photonics, leveraging…
Reconfigurable all-dielectric metalens with diffraction limited performance
Mikhail Y. Shalaginov, Sensong An, Yifei Zhang +15
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…
A packaged, fiber-coupled waveguide-enhanced Raman spectroscopic sensor
Derek M. Kita, Jérôme Michon, Juejun Hu
Waveguide-enhanced Raman spectroscopy (WERS) is a promising technique for sensitive and selective detection of chemicals in a compact chip-scale platform. Coupling light on and off…
A single-layer panoramic metalens with > 170° diffraction-limited field of view
Mikhail Y. Shalaginov, Sensong An, Fan Yang +6
Wide-angle optical functionality is crucial for implementation of advanced imaging and image projection devices. Conventionally, wide-angle operation is attained by complicated ass…