Results 41 to 50 of about 4,940 (242)

Non-contact surface grating coupling for arrays of atom–photonic devices

, 2020
For future atom–photonic devices, the incoupling method is expected to become the main bottleneck in the scaling of the number of devices, as current devices use side-coupling, which is restricted to the sample edges.
Lof, A., Nanophotonics, van Oosten, D., Sub Nanophotonics, van Lange, A.J.   +4 more
core   +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

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

Advanced Materials, EarlyView.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno, Qiangrui Dong, Marco Post, Xin Meng, Cristiano Glessi, Nynke Marije Hettema, Nidas Brandsma, Sebbe Blokhuizen, Alejandro Castañeda Garcia, Srividya Ganapathy, Thieme Schmidt, Lars van Roemburg, Bing Xu, Chun‐Ting Cho, Liedewij Laan, Miao‐Ping Chien, Daan Brinks   +16 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

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

Silicon Nanophotonics Fabrication: An innovative graduate course [PDF]

2010 17th International Conference on Telecommunications, 2010
We report our recent successful experiences related to the development of a transcontinental course in silicon photonics offered by the University of British Columbia in collaboration with CMC Microsystems. The course is offered to students from across Canada and has attracted participants from nearly every Canadian university with an advanced ...
Lukas Chrostowski, Nicolas Rouger, Dan Deptuck, Nicolas A. F. Jaeger   +3 more
openaire   +1 more source

Erbium dopants in nanophotonic silicon waveguides

Optica, 2021
We perform resonant spectroscopy of erbium implanted into nanophotonic silicon waveguides, finding 1 GHz inhomogeneous broadening and homogeneous linewidths below 0.1 GHz. Our study thus introduces a promising materials platform for on-chip quantum information processing.
Weiss, Lorenz, Gritsch, Andreas, Merkel, Benjamin, Reiserer, Andreas   +3 more
openaire   +2 more sources

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 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

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

Advanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik, Fedor Kovalev, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Ilya Shadrivov, Mariusz Martyniuk   +6 more
wiley   +1 more source