Gapped Surface Plasmon Polariton Waveguides for Plasmonic Signal Modulation Applications

2015 ◽  
Vol 15 (10) ◽  
pp. 7679-7684 ◽  
Author(s):  
Dong Hun Lee ◽  
Myung-Hyun Lee
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Applied Force ◽  
Coupling Loss ◽  
Low Loss ◽  
Metal Insulator ◽  
Telecommunication Wavelength ◽  
Plasmon Polariton ◽  
20 Nm ◽  
Cladding Layers

We investigate the characteristics of gapped surface plasmon polariton waveguides (G-SPPWs) to control a guided SPP through interaction with an applied force in the gap at a telecommunication wavelength of 1.55 μm. Gold is used as the metal in the insulator-metal-insulator waveguides (IMIWs). A low-loss polymer is used for the 30-μm-thick upper and lower cladding layers. The excited input SPPs propagate, jump over gaps with low coupling losses, and propagate again, even though there is a lengthy 12-μm-long gap in the G-SPPWs. The coupling loss is less than 0.05 dB for G-SPPWs with a gap up to 8−μm long, various widths up to 8 μm, and various thicknesses up to 50 nm. The normalized transmissions of the 2-μm-wide and 20-nm-thick G-SPPWs are less than −0.06 dB with various gap lengths up to 8 μm. The normalized transmissions of the 2-μm-long and 20-nm-thick G-SPPWs are less than −0.05 dB with various widths up to 8 μm. The normalized transmissions of the G-SPPWs that are 2-μm-wide and 2-μm-long are less than −0.27 dB for various thicknesses up to 50 nm. The maximum normalized transmission of −0.041 dB is obtained using the 2-μm-long, 2-μm-wide and 20-nm-thick G-SPPW. G-SPPWs have potential as a new plasmonic modulation device via control of the guided SPP through interaction with an applied force in the gap.

Gapped Surface Plasmon Polariton Waveguide Device Based on a Liquid Crystal

2015 ◽  
Vol 15 (10) ◽  
pp. 7711-7716 ◽  
Author(s):  
Dong Hun Lee ◽  
Myung-Hyun Lee
Keyword(s):  
Liquid Crystal ◽  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Twist Angle ◽  
Coupling Loss ◽  
Metal Insulator ◽  
Input Surface ◽  
Device Applications ◽  
Plasmon Polariton ◽  
Plasmon Polaritons

We propose a gapped surface plasmon polariton waveguide (G-SPPW) device based on a liquid crystal (LC) at a wavelength of 1.55 μm. The G-SPPW device is composed of an input 2.0-μm-wide and 5.0-μm-long insulator-metal-insulator waveguide (IMI-W), an 8-μm-long gap, and an output 2.0-μm-wide and 25.0-μm-long IMI-W. The LC is used for the gap and the 5.15-μm-thick upper and lower dielectric layers. The input surface plasmon polaritons (SPPs) propagate and jump over the gap in the G-SPPW with a coupling loss of less than ∼0.68 dB. The propagation and coupling losses of the 38-μm-long G-SPPW device are varied in the range of ∼0.5268 dB to ∼2.6716 dB and ∼0.1446 dB to ∼0.6784 dB, respectively, with LC tilt angles (1, 2) = 0° ∼ 90° at a fixed 90° twist angle. The normalized transmission of the G-SPPW device is also varied in the range from −3.351 dB to −0.6714 dB with 1, 2 = 0° ∼ 90° at a fixed 90° twist angle. The output SPP characteristics of the G-SPPW device can be properly controlled by the orientation of the LC molecules. The proposed G-SPPW device shows potential for new active plasmonic device applications.

scholarly journals Compact Optical Waveguides Based on Hybrid Index and Surface-Plasmon-Polariton Guidance Mechanisms

2007 ◽  
Vol 2007 ◽  
pp. 1-7 ◽  
Author(s):  
Min Yan ◽  
Min Qiu
Keyword(s):  
Surface Plasmon ◽  
Optical Waveguides ◽  
Surface Plasmon Polariton ◽  
Field Size ◽  
Hybrid Index ◽  
Dielectric Waveguides ◽  
Low Loss ◽  
Mode Field ◽  
Telecommunication Wavelength ◽  
Plasmon Polariton

Surface-plasmon-polariton (SPP) waveguides made of materials available in nature have, in general, been found to suffer from very high absorption loss when light confinement is beyond diffraction limit. In this paper, the possibility of combining both the conventional index-guiding and the SPP-guiding mechanisms together into one single waveguide is being explored. Such waveguides, expectedly, inherent the low-loss feature of all-dielectric waveguides as well as the superior mode field confinement possessed by SPP waveguides. By using experimentally ready materials, it is theoretically shown that compact metallodielectric waveguides can be designed with a∼500×500 nm2core size around the 1550 nm telecommunication wavelength. The examined waveguides can be interpreted as a gap SPP waveguide with an inner dielectric core. Compared to pure SPP waveguides, such hybrid waveguides have a comparable mode field size, but with significantly lower loss (∼0.05 dB/μmfor either quasi-TE or quasi-TM operation). Therefore they can be potentially deployed for a range of integrated photonic applications.

The anisotropic broadband surface plasmon polariton and hot carrier properties of borophene monolayer

Nanophotonics ◽  
2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Chaochao Jian ◽  
Xiangchao Ma ◽  
Jianqi Zhang ◽  
Jiali Jiang
Keyword(s):  
Transport Properties ◽  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Hot Carriers ◽  
Low Loss ◽  
Typical Application ◽  
Carrier Lifetimes ◽  
Photocatalytic Reactors ◽  
Plasmon Polariton ◽  
Energy And Momentum

Abstract Borophene monolayer with its intrinsic metallic and anisotropic band structures exhibits extraordinary electronic, optical, and transport properties. Especially, the high density of Dirac electrons enables promising applications for building low-loss broadband SPP devices. However, a systematic characterization of the surface plasmon polariton (SPP) properties and hot carriers generated from the inevitable SPP decay in borophene has not been reported so far. Most importantly, the mechanism for SPP losses remains obscurely quantified. In this work, from a fully first-principles perspective, we explicitly evaluate the main loss effects of SPP in borophene, including the Drude resistance, phonon-assisted intraband and direct interband electronic transitions. With this knowledge, we further calculate the frequency- and polarization-dependent SPP response of borophene, and evaluate some typical application-dependent figure of merits of SPP. On the other hand, we evaluate the generation and transport properties of plasmon-driven hot carriers in borophene, involving energy- and momentum-dependent carrier lifetimes and mean free paths, which provide deeper insight toward the transport of hot carriers at the nanoscale. These results indicate that borophene has promising applications in next-generation low-loss optoelectronic devices and photocatalytic reactors.

scholarly journals High-performance and compact broadband terahertz plasmonic waveguide intersection

Nanophotonics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1811-1819 ◽  
Author(s):  
Mingrui Yuan ◽  
Yanfeng Li ◽  
Yongchang Lu ◽  
Ying Zhang ◽  
Ziying Zhang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
High Performance ◽  
Surface Plasmon Polariton ◽  
Broad Band ◽  
Plasmonic Waveguide ◽  
Integrated Systems ◽  
Low Loss ◽  
Wide Range ◽  
Plasmon Polariton ◽  
New Applications

AbstractFor terahertz (THz) integrated systems, an intersection between waveguides is inevitable and is often accompanied by considerable crosstalk and loss. Here, we propose and experimentally demonstrate a novel type of crossing with a footprint less than 0.2 × 0.2 mm2 for THz surface plasmon polariton waveguiding. With an optimized crossover structure, the measured loss of the intersection is as low as 0.89 dB/crossing, and the crosstalk is less than −19.06 dB/crossing at 0.55 THz. The proposed crossing structure is compact and has low loss and crosstalk within a broad band, which will pave the way for a wide range of new applications for THz integrated systems.

Surface plasmon polariton mode in the metal-insulator-metal waveguide

Optik ◽  
2017 ◽  
Vol 134 ◽  
pp. 187-193 ◽  
Author(s):  
Zhu Jun ◽  
Wenju Xu ◽  
Zhengjie Xu ◽  
Deli Fu ◽  
Shuxiang Song ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Metal Insulator ◽  
Surface Plasmon Polariton Mode ◽  
Metal Waveguide ◽  
Metal Insulator Metal ◽  
Plasmon Polariton

scholarly journals Bulk and surface plasmon polariton excitation in RuO_2 for low-loss plasmonic applications in NIR

2012 ◽  
Vol 20 (8) ◽  
pp. 8618 ◽  
Author(s):  
L. Wang ◽  
C. Clavero ◽  
K. Yang ◽  
E. Radue ◽  
M. T. Simons ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Low Loss ◽  
Plasmon Polariton
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