Characterization of bending losses for curved plasmonic nanowire waveguides

Dikken, D.J.W.; Spasenović, Marko; Verhagen, Ewold; Oosten, D. van; Kuipers, L.

doi:10.1364/oe.18.016112

Cited by 33 publications

(29 citation statements)

References 33 publications

(42 reference statements)

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“…To analyze the coupling efficiency between waveguide and ring resonator propagation loss needs to be determined, which is obtained from the imaginary part of local modal effective index. Propagation loss is equal to where is free space wavelength is the imaginary part of the effective index ( ) in the MIM waveguides and L= 2πR is the round trip length in ring resonator [23]. For the sake of simplicity, it is assumed that effective index of ring resonator and bus waveguide is same.…”

Section: Numerical Simulation Results and Analysismentioning

confidence: 99%

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Ultra-high sensitive plasmonic refractive index sensor based on ring resonator

Zafar

Sethia

Mathur

et al. 2015

2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO)

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In this paper, an ultra compact surface Plasmon (SP) sensor based on 'ring resonator coupled metal-insulator-metal (MIM) waveguide' is theoretically studied and numerically simulated by finite difference time domain (FDTD) method. Ring and waveguide is filled by material to be sensed and implanted in a silver medium whose frequency dependent relative permittivity is characterized by Drude model. Any change in refractive index of material to be sensed leads to variation in resonance condition. Refractive index of the medium can be sensed by detecting resonant wavelength of the ring resonator. Due to the confinement of material to be sensed and optical energy to same area, light-matter interaction increases, and hence, an ultra high value of sensitivity(S= 1235 nm per refractive index unit) is obtained. Sensitivity can be further increased with increasing radius of resonator but at the cost of increased propagation losses and size of the device. Device offers an ultra large value of sensitivity that opens its opportunity to be used in biological and biochemical sensors.

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Section: Numerical Simulation Results and Analysismentioning

confidence: 99%

“…For =1550 nm, and radius R= 150 nm, propagation length is found to be 4.45 µm (corresponding to loss 0.9424 dB). Bending losses depend exponentially on the radius of ring resonator R as explained in [23].…”

Section: Numerical Simulation Results and Analysismentioning

confidence: 99%

Ultra-high sensitive plasmonic refractive index sensor based on ring resonator

Zafar

Sethia

Mathur

et al. 2015

2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO)

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“…metallic nanowires with dimensions as small as 40 nm have been developed, using a simple single-layer nanofabrication process. An exemplary device and scanning near-field microscopy field map are shown in Figure 3(C)-(D) [48,49].…”

Section: Passive Routingmentioning

confidence: 99%

Integrated nanoplasmonic waveguides for magnetic, nonlinear, and strong-field devices

et al. 2016

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Abstract:As modern complementary-metal-oxide-semiconductor (CMOS) circuitry rapidly approaches fundamental speed and bandwidth limitations, optical platforms have become promising candidates to circumvent these limits and facilitate massive increases in computational power. To compete with high density CMOS circuitry, optical technology within the plasmonic regime is desirable, because of the sub-diffraction limited confinement of electromagnetic energy, large optical bandwidth, and ultrafast processing capabilities. As such, nanoplasmonic waveguides act as nanoscale conduits for optical signals, thereby forming the backbone of such a platform. In recent years, significant research interest has developed to uncover the fundamental physics governing phenomena occurring within nanoplasmonic waveguides, and to implement unique optical devices. In doing so, a wide variety of material properties have been exploited. CMOS-compatible materials facilitate passive plasmonic routing devices for directing the confined radiation. Magnetic materials facilitate time-reversal symmetry breaking, aiding in the development of nonreciprocal isolators or modulators. Additionally, strong confinement and enhancement of electric fields within such waveguides require the use of materials with high nonlinear coefficients to achieve increased nonlinear optical phenomenon in a nanoscale footprint. Furthermore, this enhancement and confinement of the fields facilitate the study of strong-field effects within the solid-state environment of the waveguide. Here, we review current stateof-the-art physics and applications of nanoplasmonic waveguides pertaining to passive, magnetoplasmonic, nonlinear, and strong-field devices. Such components are essential elements in integrated optical circuitry, and each fulfill specific roles in truly developing a chip-scale plasmonic computing architecture.

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“…The incident radiation couples strongly to the conduction electrons of the metal and the mode propagates as a coupled oscillation of charge density in the metal and evanescent electromagnetic fields in the dielectric. The strong coupling of radiation to the metal features has enabled demonstration of waveguide devices with cross-sectional dimensions as small as a few tens of nanometers [2]. Plasmonic waveguides also exhibit low cross talk and low bending losses compared to their photonic counterparts.…”

Section: Introductionmentioning

confidence: 99%