Abstract:Optical wireless transmission has recently become a major cutting-edge alternative for on-chip/inter-chip communications with higher transmission speeds and improved power efficiency. Plasmonic nanoantennas, the building blocks of this new nanoscale communication paradigm, require precise design to have directional radiation and improved communication ranges. Particular interest has been paid to plasmonic Yagi–Uda, i.e., the optical analog of the conventional Radio Frequency (RF) Yagi–Uda design, which may all… Show more
“…Other, more compact antenna configurations can be implemented through integrated plasmonic antennas. Different configurations of plasmonic antennas have been proposed in the literature for on-chip wireless communications [54][55][56][57]. The plasmonic antennas have very small dimensions (a few microns), but they suffer non-negligible losses due to plasmonic mode propagation in the lossy metal.…”
Optical Wireless Networks on-Chip are an emerging technology recently proposed to improve the interconnection between different processing units in densely integrated computing architectures. In this work, we propose a 4 × 4 optical wireless switch (OWS) based on optical phased arrays (OPAs) for broadband reconfigurable on-chip communication. The OPA and OWS design criteria are reported. Moreover, the performances of the OWS are analyzed and optimized considering the electromagnetic propagation in on-chip multilayer structures, with different thicknesses of the cladding layer. The effect on the OWS behavior of a non-ideal distribution of the power in input to the OPA is also investigated by designing a 1 × 7 beam splitter, based on a single-stage multi-mode interference (MMI) device to be used as a single element of the OWS. Then, the MMI output signals are considered in input to the transmitting OPAs and the OWS performances are evaluated.
“…Other, more compact antenna configurations can be implemented through integrated plasmonic antennas. Different configurations of plasmonic antennas have been proposed in the literature for on-chip wireless communications [54][55][56][57]. The plasmonic antennas have very small dimensions (a few microns), but they suffer non-negligible losses due to plasmonic mode propagation in the lossy metal.…”
Optical Wireless Networks on-Chip are an emerging technology recently proposed to improve the interconnection between different processing units in densely integrated computing architectures. In this work, we propose a 4 × 4 optical wireless switch (OWS) based on optical phased arrays (OPAs) for broadband reconfigurable on-chip communication. The OPA and OWS design criteria are reported. Moreover, the performances of the OWS are analyzed and optimized considering the electromagnetic propagation in on-chip multilayer structures, with different thicknesses of the cladding layer. The effect on the OWS behavior of a non-ideal distribution of the power in input to the OPA is also investigated by designing a 1 × 7 beam splitter, based on a single-stage multi-mode interference (MMI) device to be used as a single element of the OWS. Then, the MMI output signals are considered in input to the transmitting OPAs and the OWS performances are evaluated.
“…10 In this work, we present a numerical study of a magnetoplasmonic Yagi−Uda nanoantenna made of an arrangement of ferromagnetic nanorods of cobalt−silver alloy (Co 6 Ag 94 ) embedded in silica (SiO 2 ). In this highly directive radiation nanostructure design, the magnetoplasmonic elements are coupled through near-field overlaps 7 in what is known as plasmon hybridization. 32 In contrast to the dipolar magnetoplasmonic nanoaperture, 31 which only has control over the transmitted/scattered field, the system in this work is able to transform the incident field into a highly directive radiated beam for on-chip optical wireless communications.…”
Section: ■ Introductionmentioning
confidence: 99%
“…The radiation properties of plasmonic nanoparticles , have been exploited to replace conventional nanoelectronic interconnects that can be lossy and with narrow bandwidth for chip-scale communications. , Examples are the high-performance optical wireless nanolinks and highly directive nanoantenna designs, , which can be excited by integrated optical and electrical mechanisms. − Wireless broadcasting is nevertheless limited to point-to-point communication, that is, a fixed transmitting nanoantenna with a fixed receiving nanoantenna. There has been a numerical demonstration of electrically tunable beam steering, but only with an array of antenna elements.…”
On-chip wireless communications require
optical nanoantennas with
dynamically tunable radiation patterns, which may allow for higher
integration with multiple nanoantennas instead of two fixed nanoantennas
in existing approaches. In this paper, we introduce
a concept to enable active manipulation of radiated beam steering
using applied magnetic fields. The proposed system consists of a highly
directive Yagi–Uda-like arrangement of magnetoplasmonic nanoribs
made of Co6Ag94 and immersed in SiO2. Numerical demonstration of the tilting of the radiated beam from
the nanoantenna on its plane is provided with full-wave electromagnetic
simulations using the finite element method. The tilt direction of
the radiated beam can be changed by reversing the magnetization direction,
while the conventional plasmonic nanoantenna pattern is recovered
by demagnetizing the system. The geometry of the nanoantenna can be
tailored to work at optical or infrared wavelengths, but a proof of
concept for λ = 700 nm is conducted for taking advantage of
the high magneto-optical activity of Co6Ag94. The design was based on experimental data for materials that can
be fabricated via nanolithography, thus permitting magnetically on-chip
reconfigurable optical wireless communications.
“…Plasmonic nanostructures have garnered significant attention owing to their exceptional optical properties, including enhanced absorption and sub-diffraction light localization of electromagnetic (EM) waves [1][2][3]. Their use can be explored in a diverse range of applications, such as EM shielding [4,5], optical detectors [6,7], and high-frequency communication systems [8,9]. Recently, some advancements have centered on the narrowband perfect absorption of plasmonic nanostructures with tunable resonances [10][11][12][13].…”
Plasmonic nanostructures as narrowband perfect absorbers have garnered significant attention due to their potential applications in biosensing and environment detection. This study emphasizes the investigation of arrayed split ring nanostructures within the configuration of metal-insulator-metal (MIM) multilayers, resulting in a maximum light absorption of 99.94% in the near-infrared (NIR) spectral range. The exceptional absorption efficiency of the device is attributed to the strong resonance of electric and magnetic fields arising from the Fabry–Pérot cavity resonance. The resonant peak can be flexibly tuned by engineering the dielectric layer thickness, the period, and the geometric parameter of split rings. Remarkably, the device exhibits promising capabilities in sensing, demonstrating a sensitivity of 326 nm/RIU in visible wavelengths and 504 nm/RIU in NIR wavelengths when exposed to bio-analytes with varying refractive indices. This designed nanostructure can serve as a promising candidate for biosensors or environmental detection.
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