Results 31 to 40 of about 3,596 (198)

Stable Excitation of Orbital Angular Momentum States in Air-Core Fiber Seeded by an Integrated Optical Vortex Beam Emitter

IEEE Photonics Journal, 2020
We experimentally demonstrate excitation of orbital angular momentum states in an air-core fiber by a silicon integrated vortex beam emitter which is designed and fabricated to match the modes supported by the fiber. The coupling loss is measured to be &#
Jiamin Wang, Jan Markus Baumann, Jing Xu, Karsten Rottwitt, Yunhong Ding   +4 more
doaj   +1 more source

Nonlinear silicon nanophotonics for mid-infrared applications [PDF]

2011 ICO International Conference on Information Photonics, 2011
The silicon nanophotonic wire platform can be applied toward development of integrated optical devices for the generation and processing of mid-infrared light signals. The demonstration of a mid-infrared optical parametric amplifier will be reviewed, and recent work aimed at expanded gain bandwidth and reduced pump power requirements will be presented.
Green, William MJ, Liu, Xiaoping, Kuyken, Bart, Osgood, Richard M Jr, Roelkens, Günther, Baets, Roel, Vlasov, Yurii A   +6 more
openaire   +1 more source

Bandwidth steering in HPC using silicon nanophotonics [PDF]

Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis, 2019
As bytes-per-FLOP ratios continue to decline, communication is becoming a bottleneck for performance scaling. This paper describes bandwidth steering in HPC using emerging reconfigurable silicon photonic switches. We demonstrate that placing photonics in the lower layers of a hierarchical topology efficiently changes the connectivity and consequently ...
George Michelogiannakis, Yiwen Shen 0002, Min Yee Teh, Xiang Meng 0003, Benjamin Aivazi, Taylor L. Groves, John Shalf, Madeleine Glick, Manya Ghobadi, Larry Dennison, Keren Bergman   +10 more
openaire   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

High-efficiency self-focusing metamaterial grating coupler in silicon nitride with amorphous silicon overlay

Scientific Reports
Efficient fiber-chip coupling interfaces are critically important for integrated photonics. Since surface gratings diffract optical signals vertically out of the chip, these couplers can be placed anywhere in the circuit allowing for wafer-scale testing.
William Fraser, Daniel Benedikovic, Radovan Korcek, Maziyar Milanizadeh, Dan-Xia Xu, Jens H. Schmid, Pavel Cheben, Winnie N. Ye   +7 more
doaj   +1 more source

Field‐Programmable Mobile Magneto‐Photonic Metaparticles for Active Light Manipulation and Steering

Advanced Materials, EarlyView.
We report magneto‐photonic metaparticles that integrate magnetic actuation with nanoimprinted metagratings, enabling mobile and programmable beam steering in aqueous environments. This platform achieves real time, directional light control beyond static or line‐of‐sight systems, while remaining compatible with scalable fabrication, providing a ...
Seung Yeol Lee, Yujie Luo, Ognjen Ilic
wiley   +1 more source

Nanophotonic Pockels modulators on a silicon nitride platform [PDF]

Nature Communications, 2018
AbstractSilicon nitride (SiN) is emerging as a competitive platform for CMOS-compatible integrated photonics. However, active devices such as modulators are scarce and still lack in performance. Ideally, such a modulator should have a high bandwidth, good modulation efficiency, low loss, and cover a wide wavelength range. Here, we demonstrate the first
Koen Alexander, John P. George, Jochem Verbist, Kristiaan Neyts, Bart Kuyken, Dries Van Thourhout, Jeroen Beeckman   +6 more
openaire   +6 more sources

Far‐Infrared Hyperbolic Phonon–Polaritons in Zirconium Disulfide

Advanced Materials, EarlyView.
An unpatterned ZrS2${\rm ZrS}_2$ flake, coupled to far‐field infrared light by metal nanoribbons, reveals hyperbolic phonon polaritons with multiple higher‐order branches and effective refractive indices up to 223. This resonator‐assisted approach establishes ZrS2${\rm ZrS}_2$ as a compact van der Waals platform for deeply subwavelength far‐infrared ...
Subhodip Saha, Ryan Kowalski, Joseph R. Matson, Thomas G. Folland, Tony Low, Joshua D. Caldwell, In‐Ho Lee, Sang‐Hyun Oh   +7 more
wiley   +1 more source

Unveiling α‐MoO3 as a High‐Index, Low‐Loss Anisotropic Material: Bridging the Gap From Mid‐Infrared to Ultraviolet Nanophotonics

Advanced Materials, EarlyView.
α‐MoO3 is established as a high‐index, low‐loss anisotropic platform bridging mid‐infrared polaritonics and ultraviolet‐visible nanophotonics. Spectroscopic ellipsometry and calculations reveal refractive indices exceeding 3.9, with the largest in‐plane birefringence among transparent layered crystals at 425–500 nm, enabling zero‐order UV waveplates ...
Adilet N. Toksumakov, Dmitriy V. Grudinin, Georgy A. Ermolaev, Alexey P. Tsapenko, Anton A. Minnekhanov, Konstantin V. Kravtsov, Nikolay V. Pak, Arslan B. Mazitov, Andrey A. Vyshnevyy, Aleksandr S. Slavich, Ivan A. Kruglov, Gleb I. Tselikov, Aleksey V. Arsenin, Kostya S. Novoselov, Valentyn S. Volkov   +14 more
wiley   +1 more source

Enhanced effective nonlinearities in silicon nitride free-standing nanopatterned membranes [PDF]

APL Photonics
Silicon nitride (SiN) represents a promising complementary metal-oxide-semiconductor material for on-chip nanophotonics applications due to its unexpected linear and nonlinear optical properties.
P. Franceschini, M. Nikitin, A. Tognazzi, K. Brańko, O. Takayama, R. Malureanu, A. C. Cino, C. De Angelis, A. Lavrinenko   +8 more
doaj   +1 more source