scholarly journals Millimeter-Wave-to-Terahertz Superconducting Plasmonic Waveguides for Integrated Nanophotonics at Cryogenic Temperatures

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4291
Author(s):  
Samane Kalhor ◽  
Majid Ghanaatshoar ◽  
Hannah J. Joyce ◽  
David A. Ritchie ◽  
Kazuo Kadowaki ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Research Field ◽  
Geometrical Parameters ◽  
Slot Waveguide ◽  
Cryogenic Temperatures ◽  
Plasmonic Waveguides ◽  
Propagation Length ◽  
Modal Characteristics ◽  
High Transition ◽  
Integrated Circuitry

Plasmonics, as a rapidly growing research field, provides new pathways to guide and modulate highly confined light in the microwave-to-optical range of frequencies. We demonstrated a plasmonic slot waveguide, at the nanometer scale, based on the high-transition-temperature (Tc) superconductor Bi2Sr2CaCu2O8+δ (BSCCO), to facilitate the manifestation of chip-scale millimeter wave (mm-wave)-to-terahertz (THz) integrated circuitry operating at cryogenic temperatures. We investigated the effect of geometrical parameters on the modal characteristics of the BSCCO plasmonic slot waveguide between 100 and 800 GHz. In addition, we investigated the thermal sensing of the modal characteristics of the nanoscale superconducting slot waveguide and showed that, at a lower frequency, the fundamental mode of the waveguide had a larger propagation length, a lower effective refractive index, and a strongly localized modal energy. Moreover, we found that our device offered a larger SPP propagation length and higher field confinement than the gold plasmonic waveguides at broad temperature ranges below BSCCO’s Tc. The proposed device can provide a new route toward realizing cryogenic low-loss photonic integrated circuitry at the nanoscale.

scholarly journals Numerical analysis of an infrared gas sensor utilizing an indium-tin-oxide-based plasmonic slot waveguide

2022 ◽  
Vol 11 (1) ◽  
pp. 15-20
Author(s):  
Parviz Saeidi ◽  
Bernhard Jakoby ◽  
Gerald Pühringer ◽  
Andreas Tortschanoff ◽  
Gerald Stocker ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Noble Metals ◽  
Microelectromechanical Systems ◽  
Propagation Loss ◽  
Slot Waveguide ◽  
Plasmonic Waveguides ◽  
Propagation Length ◽  
Plasmonic Material ◽  
Sensing Applications

Abstract. Plasmonic waveguides have attracted much attention owing to the associated high field intensity at the metal–dielectric interface and their ability to confine the modes at the nanometer scale. At the same time, they suffer from relatively high propagation loss, which is due to the presence of metal. Several alternative materials have been introduced to replace noble metals, such as transparent conductive oxides (TCOs). A particularly popular TCO is indium tin oxide (ITO), which is compatible with standard microelectromechanical systems (MEMS) technology. In this work, the feasibility of ITO as an alternative plasmonic material is investigated for infrared absorption sensing applications: we numerically design and optimize an ITO-based plasmonic slot waveguide for a wavelength of 4.26 µm, which is the absorption line of CO2. Our optimization is based on a figure of merit (FOM), which is defined as the confinement factor divided by the imaginary part of the effective mode index (i.e., the intrinsic damping of the mode). The obtained optimal FOM is 3.2, which corresponds to 9 µm and 49 % for the propagation length (characterizing the intrinsic damping) and the confinement factor, respectively.

ИССЛЕДОВАНИЕ НИТРИД-ГАЛЛИЕВЫХ МАЛОШУМЯЩИХ УСИЛИТЕЛЕЙ ПРИ КРИОГЕННЫХ ТЕМПЕРАТУРАХ

2020 ◽  
Vol 96 (3s) ◽  
pp. 347-352
Author(s):  
Д.Г. Алипа ◽  
В.В. Краснов ◽  
В.М. Минненбаев ◽  
А.В. Редька ◽  
Ю.В. Федоров
Keyword(s):  
Remote Sensing ◽  
Gallium Nitride ◽  
Millimeter Wave ◽  
Low Noise ◽  
Low Noise Amplifiers ◽  
Cryogenic Temperatures ◽  
Space Systems ◽  
Earth Remote Sensing ◽  
Hydrogen Level

В статье представлены результаты исследования возможности применения при криогенных температурах водородного уровня дискретных приборов и монолитных схем на основе нитрида галлия в составе малошумящих усилителей сантиметрового и миллиметрового диапазона длин волн для приемных устройств систем дистанционного зондирования Земли из космоса и в составе криогенных комплексов наблюдения космического пространства. The article presents the results of the research on the possibility of using discrete devices and gallium nitride monolithic circuits at the cryogenic temperatures of hydrogen level as part of low-noise amplifiers of centimeter and millimeter-wave bands used in receivers of Earth remote sensing space systems and in cryogenic systems for space observation.

Routing and photodetection in subwavelength plasmonic slot waveguides

Nanophotonics ◽  
2012 ◽  
Vol 1 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Dany-Sebastien Ly-Gagnon ◽  
Krishna C. Balram ◽  
Justin S. White ◽  
Pierre Wahl ◽  
Mark L. Brongersma ◽  
...  
Keyword(s):  
Photonic Devices ◽  
Information Storage ◽  
Slot Waveguide ◽  
Plasmonic Waveguides ◽  
Cross Sectional ◽  
Practical Applications ◽  
Metal Semiconductor Metal ◽  
Fabry Perot ◽  
Msm Photodetector ◽  
Integrated Detection

AbstractThe ability to manipulate light at deeply sub-wavelength scales opens a broad range of research possibilities and practical applications. In this paper, we go beyond recent demonstrations of active photonic devices coupled to planar plasmonic waveguides and demonstrate a photodetector linked to a two conductor metallic slot waveguide that supports a mode with a minute cross-sectional area of ∼λ2/100. We demonstrate propagation lengths of ∼10λ (at 850 nm), routing around 90° bends and integrated detection with a metal-semiconductor-metal (MSM) photodetector. We show polarization selective excitation of the slot mode and measure its propagation characteristics by studying the Fabry-Perot oscillations in the photocurrent spectra from the waveguide-coupled detector. Our results demonstrate the practicality of transferring one of the most successful microwave and RF waveguide technologies to the optical domain, opening up many opportunities in areas such as biosensing, information storage and communication.

Laboratory Results on Millimeter-Wave Absorption in Silicate Grain Materials at Cryogenic Temperatures

1996 ◽  
Vol 462 ◽  
pp. 1026 ◽  
Author(s):  
N. I. Agladze ◽  
A. J. Sievers ◽  
S. A. Jones ◽  
J. M. Burlitch ◽  
S. V. W. Beckwith
Keyword(s):  
Millimeter Wave ◽  
Cryogenic Temperatures ◽  
Wave Absorption ◽  
Laboratory Results

scholarly journals A Triangle Hybrid Plasmonic Waveguide with Long Propagation Length for Ultradeep Subwavelength Confinement

Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 64
Author(s):  
Qian Zhang ◽  
Jinbin Pan ◽  
Shulong Wang ◽  
Yongqian Du ◽  
Jieyu Wu
Keyword(s):  
Plasmonic Waveguide ◽  
Ohmic Loss ◽  
Plasmonic Waveguides ◽  
Propagation Length ◽  
Silicon Waveguide ◽  
Hybrid Plasmonic Waveguide ◽  
Light Waves ◽  
Fabrication Errors ◽  
Application Fields ◽  
Mode Area

Facing the problems of ohmic loss and short propagation length, the application of plasmonic waveguides is limited. Here, a triangle hybrid plasmonic waveguide is introduced, where a cylinder silicon waveguide is separated from the triangle prism silver waveguide by a nanoscale silica gap. The process of constant optimization of waveguide structure is completed and simulation results indicate that the propagation length could reach a length of 510 μm, and the normalized mode area could reach 0.03 along with a high figure of merit 3150. This implies that longer propagation length could be simultaneously achieved along with relatively ultra-deep subwavelength mode confinement due to the hybridization between metallic plasmon polarization mode and silicon waveguide mode, compared with previous study. By an analysis of fabrication errors, it is confirmed that this waveguide is fairly stable over a wide error range. Additionally, the excellent performance of this is further proved by the comparison with other hybrid plasmonic waveguides. Our work is significant to manipulate light waves at sub-wavelength dimensions and enlarge the application fields, such as light detection and photoelectric sensors, which also benefit the improvement of the integration of optical devices.

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