APL Photonics

09/09/2022

Thin-film lithium niobate dual-polarization IQ modulator on a silicon substrate for single-carrier 1.6 Tb/s transmission

A TFLN dual-polarization IQ modulator is presented. The modulator enables single-carrier 1.6 Tb/s data transmission and could find its potential application in next-generation optical interconnects.

We successfully demonstrate a monolithic integrated dual-polarization in-phase/quadrature (IQ) modulator based on thin-film lithium niobate platform with a silicon substrate, which consists of IQ m...

09/08/2022

This Special Topic collection guest edited by Professor Igor Aharonovich, Dr. Andrea Blanco-Redondo, Dr. Alex S. Clark & APL Photonics Editors Christelle Monat & Benjamin Eggleton is dedicated to highlighting important progress in the field of Integrated Quantum Photonics & presents new, cutting-edge results, both experimental and theoretical, towards the common goal of exploring quantum photonic phenomena. Read the full collection https://aippub.org/3zZrUDx

09/02/2022

This special issue discusses the current status and future perspectives on photonics and AI in IT covering from materials science, device physics, to systems and applications, including matrix computation devices, nonlinear activation devices, bio-inspired photonic structures, AI for inverse design, reservoir computing systems, deep neural networks and machine learning architectures, LiDAR, robots, unmanned autonomous vehicles, drones, smart data centers, and intelligent communications and computing.
https://aippub.org/3BaKaM1

08/29/2022

This Special Topic from APL Photonics provides a valuable forum where researchers were able to share their novel findings, techniques, and applications regarding #SARS-CoV-2, #COVID19, and other #coronaviruses (#MERS-CoV, #SARS-CoV, #OC43, #229E, etc.) in the hope of beating the #coronavirus #pandemic soon. Guest edited by Andrea Armani, Stephen Evans, Hao He, Chulhong Kim, Wei Min, and Roberto Osellame with APL Photonics Deputy Editor Keisuke Goda and Editor-in-Chief Benjamin Eggleton
https://aippub.org/3vYaoOz

08/26/2022

This Special Topic provides a valuable forum where researchers shared their most recent, novel findings, and understanding of basic principles, advanced techniques, and applications of #photonics with #AI.

Guest Edited by Bahram Jalali, Cheng Lei, and Guohai Situ
https://aippub.org/3AxWaqn

08/20/2022

We’re proudly sharing the 2021 APL Photonics Future Luminary Collection, featuring notable papers by emerging investigators. These papers were identified by the Future Luminary Award selection committee as particularly outstanding among the many excellent candidates for the award. https://aippub.org/3dA1CzZ

08/11/2022

This recently published special topic guest edited by Miguel Bandres, Andrey Sukhorukov, Oded Zilberberg, and @APL Photonics Associate Editor Alexander Szameit focuses on synthetic gauge fields, which enable uncharged particles to behave as if affected by external fields. Read the whole collection today!
https://aippub.org/3Jwj5oY

08/06/2022

This special topic aims to capture the most exciting advances in the #perovskite #photonics field, promoting high impact applications. Guest Edited by: Xiaoming Wen, Joseph Berry, & APL Photonics Editor: Baohua Jia. https://aippub.org/3SkU6Jj

07/28/2022

Now open for submissions! This special issue aims at capturing the most exciting advances in the #ultrafast #laser #fabrication field and promoting high impact applications. Submit by December 31!
https://aippub.org/3nPBtzb

07/25/2022

Epi-fluorescence imaging of the human brain through a multimode fiber

We report auto-fluorescence human brain imaging through a hair-thin fiber probe. Accumulations of lipofuscin in Alzheimer's disease brain was visualized, paving the way toward in vivo brain imaging. Vrije Universiteit Amsterdam https://bit.ly/3P7fxuN

Visualization of the subcellular structures deep into the living brain is a major challenge in life science. Miniaturized microendoscopes allow for imaging of deep brain structures in vivo. Convent...

07/13/2022

Spaceplate testing shows great promise for miniaturization of optical systems

The thin metamaterial optics elements could help reduce the size of cameras, microscopes, telescopes and more.

07/06/2022

Optical Fiber Imaging Method Advances Studies of Alzheimer's Disease - AIP Publishing LLC

An optical fiber as thin as a strand of hair holds promise for use in minimally invasive deep-tissue studies of patients’ brains that show the effects Alzheimer’s disease and other brain disorders.

Article: Epi-fluorescence imaging of the human brain though a multimode fiber DOI: 10.1063/5.0080672 WASHINGTON, June 30, 2022 – An optical fiber as thin as a strand of […]

06/26/2022

Broadband resonance-enhanced frequency generation by four-wave mixing in a silicon Floquet topological photonic insulator

Novel high-Q, cavity-less Floquet Defect Mode Resonance enables efficient broadband frequency generation by four-wave mixing in a robust topological silicon photonics platform.

Floquet topological photonic insulators, whose light transport properties are dictated by the periodic drive sequence of the lattice, provide more flexibility for controlling and trapping light tha...

06/25/2022

On-chip infrared photonics with Si-Ge-heterostructures: What is next?

We discuss selected recent material and device developments as well as possible future trends that are enabled by the maturity of the SiGe material platform.

The integration of Ge on Si for photonics applications has reached a high level of maturity: Ge photodetectors are available on the Si platform in foundry processes, and Si/Ge heterostructure multi...

06/15/2022

Localization-assisted stimulated Brillouin scattering spectroscopy

Localization theory, previously used for super-resolution microscopy, is here extended to the spectral domain for SBS spectrpscopy at improved acquisition speed and precision. Giulia Zanotelli

Brillouin spectroscopy has emerged as a promising modality to noninvasively probe the mechanical properties of biologically relevant materials. Stimulated Brillouin scattering (SBS) has the potenti...

06/15/2022

High-bandwidth Si/In2O3 hybrid plasmonic waveguide modulator

In this paper, an ultra-compact Si/In2O3 hybrid plasmonic waveguide modulator exhibits a high modulation bandwidth of >40 GHz for the first time.

A novel Si/In2O3 hybrid plasmonic waveguide modulator was experimentally realized by using an asymmetric directional coupler (ADC), which consists of a silicon photonic waveguide and a Si/In2O3 hyb...

06/14/2022

Piezo-optomechanical cantilever modulators for VLSI visible photonics

The Quantum Moonshot Team reports high-performance, piezo-actuated cantilevered waveguides for visible-wavelength optical modulation and applications to large-scale photonics and quantum computing.

Visible-wavelength very large-scale integration photonic circuits have a potential to play important roles in quantum information and sensing technologies. The realization of scalable, high-speed, ...

06/14/2022

First-photon imaging with independent depth reconstruction

An improved first-photon imaging scheme, in which reflectivity and depth are reconstructed independently, is proposed to address severe noises. Results showed a 36.2% improvement in depth accuracy.

First-photon imaging allows the reconstruction of scene reflectivity and depth information with a much fewer number of photon countings, compared with conventional time-correlated single-photon cou...

06/13/2022

Thermal biphotons

Scattered entangled photons display unique coherence properties that prevail disorder averaging and enable quantification of entanglement.

The observation of the Hanbury Brown and Twiss (HBT) effect with thermal light marked the birth of quantum optics. All the thermal sources considered to date did not feature quantum signatures of l...

06/13/2022

Non-contact optical magnetic field sensor based on metamaterial nanomechanics

Magnetic field reveals itself by deforming a tiny metamaterial device, causing a color change. The novel sensor is read from a distance and offers record-breaking size, speed and spatial resolution. Optoelectronics Research Centre

We demonstrate a non-contact optical magnetic field sensor that is based on actuation of a metamaterial-microcavity by the magnetic Lorentz force. Magnetic field is transduced to a change of the se...

06/07/2022

This Special Topic collection guest editored by Professor Igor Aharonovich, Dr. Andrea Blanco-Redondo, Dr. Alex S. Clark and APL Photonics Editors Christelle Monat and Benjamin Eggleton is dedicated to highlighting important progress in the field of Integrated Quantum Photonics and presenting new cutting-edge results, both experimental and theoretical, towards the common goal of exploring quantum photonic phenomena. Read the full collection at https://bit.ly/3GCEe

06/03/2022

Scaling up silicon photonic-based accelerators: Challenges and opportunities

There is a renewed excitement for optical computing worldwide. In this work, we explore the bounds of realizing silicon-photonic based accelerators today, and what can be realized in the coming years. UBC Electrical and Computer Engineering

Digital accelerators in the latest generation of complementary metal–oxide–semiconductor processes support, multiply, and accumulate (MAC) operations at energy efficiencies spanning 10–100 fJ/Op. H...

06/03/2022

High performance thin-film lithium niobate modulator on a silicon substrate using periodic capacitively loaded traveling-wave electrode

An large bandwidth electro-optic modulator without compromising the driving voltage based on the TFLN on a silicon substrate is presented with both low optical and low microwave losses.

Thin-film lithium niobate (TFLN) based traveling-wave modulators maintain simultaneously excellent performances, including large modulation bandwidth, high extinction ratio, low optical loss, and h...

05/26/2022

Performance enhancement of graphene/Ge near-infrared photodetector by modulating the doping level of graphene

The demand for high-performance, low-cost near-infrared (NIR) photodetectors is rapidly increasing due to the potential applications in distance sensor, medical sensor, optical communication, and night vision systems.

In this paper, we improved the performance of a near-infrared graphene/germanium heterojunction photodetector at atmospheric pressure and at room temperature. We applied graphene with p-type chemic...

05/24/2022

This recently published special topic guest edited by Miguel Bandres, Andrey Sukhorukov, Oded Zilberberg, and APL Photonics Associate Editor Alexander Szameit focuses on synthetic gauge fields, which enable uncharged particles to behave as if affected by external fields. Read the whole collection today!
https://bit.ly/3lkVZX9

05/20/2022

Perspectives on nonlinear optics of graphene: Opportunities and challenges

Check out this Perspective article on future opportunities ad possible pitfalls in the exploration and exploitation of graphene’s absorptive and refractive nonlinear optical effects. B-Phot Brussels Photonics

The first nonlinear-optical experiments with graphene date back over a decade, and a wide range of research breakthroughs has been reported since then, particularly on the third-order nonlinearitie...

05/20/2022

We proudly present the 2021 APL Photonics Future Luminary Collection, featuring notable papers by emerging investigators. These papers were identified by the Future Luminary Award selection committee as particularly outstanding among the many excellent candidates for the award. https://bit.ly/3NkbFFM

05/17/2022

Are you attending #CLEO22? Join us at the @aplphotonics Cocktail Reception TONIGHT & meet #Editor-in-Chief @ProfBenEggleton! RSVP at https://bit.ly/3LeiRBU

05/16/2022

APL Photonics Editor-In-Chief, Ben Eggleton Announces the 2021 Future Luminary Award Recipients

Watch along as Benjamin Eggleton announces the 2021 Future Luminary Award Winners! https://bit.ly/3wr6ZqZ

05/13/2022

A quantum cascade laser-pumped molecular laser tunable over 1 THz

This paper demonstrates a new compact laser source emitting on more than 120 individual frequencies between 250 GHz and 1.3 THz that has the potential to bridge the terahertz gap.
Harvard John A. Paulson School of Engineering and Applied Sciences
The U.S. Army Research Laboratory
Daylight Solutions

Despite decades of research, no frequency tunable sources span the terahertz gap between 0.3 and 3 THz. By introducing methyl fluoride (CH3F) as a new gain medium for a quantum cascade laser-pumped...

05/05/2022

Machine learning for optical fiber communication systems: An introduction and overview

We provide an overview of machine learning for optical fibre communication systems and networks. We summarize methods and recent applications before highlighting possible avenues for future research.

Optical networks generate a vast amount of diagnostic, control, and performance monitoring data. When information is extracted from these data, reconfigurable network elements and reconfigurable tr...

04/29/2022

MaxwellNet: Physics-driven deep neural network training based on Maxwell’s equations

We report a novel deep learning scheme that calculates the optical fields given the material distribution without the ground truth solution by using a physics-driven loss based on Maxwell’s equations.

Maxwell’s equations govern light propagation and its interaction with matter. Therefore, the solution of Maxwell’s equations using computational electromagnetic simulations plays a critical role in...

04/24/2022

Optomechanical metamaterial nanobolometer

Metamaterial nanowires engaged in Brownian motion detect radiation with record-breaking spatial resolution, promising miniature high-speed visible-to-infrared cameras, spectrometers and polarimeters. Optoelectronics Research Centre

Bolometers are detectors of electromagnetic radiation that usually convert the radiation-induced change in temperature of the detector into electric signals. Temperature-dependent electrical resist...

04/17/2022

Giant chiroptical response of twisted metal nanorods due to strong plasmon coupling

We study the effect of plasmon coupling between twisted nanorods on its chiroptical response, which will assist in the design of chiral plasmonic structures for metamaterial applications.

The chiroptical response of most naturally occurring chiral materials is generally very weak, which discourages further studies and limits applications. Recently, chiral plasmonic structures have r...