Optical performance of single-mode hybrid dielectric-loaded plasmonic waveguide-based components

Chu, Hong‒Son; Li, Er‐Ping; Bai, Peng; Hegde, Ravi S.

doi:10.1063/1.3437088

Cited by 148 publications

(69 citation statements)

References 19 publications

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“…In refs. [10][11][12][13][14] the 2D constrained HMI waveguide and related devices are investigated. References [15] and [16] deals with 2D HMIM waveguides and [17][18][19] with 2D HIMI waveguides.…”

Section: Introductionmentioning

confidence: 99%

Propagation Characteristics of Multilayer Hybrid Insulator-Metal-Insulator and Metal-Insulator-Metal Plasmonic Waveguides

Noghani

Samiei

2014

AEM

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Propagation characteristics of symmetrical and asymmetrical multilayer hybrid insulator-metal-insulator (HIMI) and metal-insulator-metal (HMIM) plasmonic slab waveguides are investigated using the transfer matrix method. Propagation length (L p ) and spatial length (L s ) are used as two figures of merit to qualitate the plasmonic waveguides. Symmetrical structures are shown to be more performant (having higher L p and lower L s ), nevertheless it is shown that usage of asymmetrical geometry could compensate for the performance degradation in practically realized HIMI waveguides with different substrate materials. It is found that HMIM slab waveguide could support almost long-range subdiffraction plasmonic modes at dimensions lower than the spatial length of the HIMI slab waveguide.

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Section: Introductionmentioning

confidence: 99%

Propagation Characteristics of Multilayer Hybrid Insulator-Metal-Insulator and Metal-Insulator-Metal Plasmonic Waveguides

Noghani

Samiei

2014

AEM

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“…In addition, SiHDLW optical devices adopting Silicon-on-Insulator (SOI) substrate, such as splitters [7], couplers [7,19], and modulators [20] have also been demonstrated. Furthermore, the SiHDLW shows two common structures of top metal SiHDLW (TM-SiHDLW) [7,8,16,17,21] and bottom metal SiHDLW (BM-SiHDLW) [10,14,22]. The TM-SiHDLW shows a more promising potential than the BM-SiHDLW because of its flexibility to integrate with nanophotonic circuits [18].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, in this study, the dimensions of a TM-SiHDLW are optimized according to parameters, such as propagation length, mode area, and EM field distribution of the hybrid SPP mode. For conventional TM-SiHDLWs, the Si dielectric ridge is often exposed to air [10,23]. The property of the hybrid DL SPPWG might become unpredictable due to the formation of native oxide whose thickness may vary significantly due to environmental conditions [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Among varieties of SPPWGs, the hybrid dielectric-loaded (DL) SPPWG combines the advantages of hybrid SPPWG [9][10][11] and DL SPPWG [12]: Long propagation length, relatively small mode area, and nanometer dimension of SPPWG [13][14][15]. The hybrid DL SPPWG using silicon (Si) dielectric (Si-based hybrid DL SPPWG, SiHDLW) [7,8,10,13,14,[16][17][18], which has been shown to yield strong field confinement [8,10,13,17,18], is a particularly attractive candidate for plasmonic devices because the waveguide is easier to fabricate with conventional nano/micro techniques [7]. In addition, SiHDLW optical devices adopting Silicon-on-Insulator (SOI) substrate, such as splitters [7], couplers [7,19], and modulators [20] have also been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

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Design of a Low Loss Silicon Based Hybrid Dielectric-Loaded Plasmonic Waveguide and a Compact High Performance Optical Resonator

Hsieh¹,

Chu²,

Huang³

et al. 2015

PIER M

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Abstract-Here we present the design of a low loss top metal silicon (Si) hybrid dielectric-loaded plasmonic waveguide (TM-SiHDLW) and a compact, high performance optical resonator by numerical simulation based on finite element method. The waveguide adopted a thick (200 nm) top metal stripe structure to yield optimal performance due to reduced Ohmic loss in conductor around the stripe edge/corner. Moreover, a relatively thick (150 nm) dielectric spacer between the Si ridge and the metal stripe was employed to achieve both long propagation length and good field confinement. The effect of a thin (10 nm) silicon nitride (SiN x ) layer covering the waveguide which was added for minimizing uncertainties on optical properties of SiHDLW resulting from high density of dangling bonds on Si surface was also investigated. Simulation results show that there is no significant degradation on the performance of the TM-SiHDLW. For the proposed plasmonic waveguide, a propagation length of 0.35 mm and a mode area around 0.029 µm 2 were demonstrated. The TM-SiHDLW waveguide was then used as the basis for an optical resonator, which was designed to operate at the fundamental TE 011 mode for yielding high quality factor at a relatively small footprint size. A metal enclosure was also adopted to reduce the radiation loss, and a high quality factor of ∼1900 was obtained, more than double the results in other disk or ring resonators of comparable size. Compared to the resonators based on a rounded top metal Si hybrid dielectric-loaded plasmonic waveguide (RTM-SiHDLW) which has a much longer propagation length than the TM-SiHDLW, as reported in our previous work, the performance is essentially the same. This is simply because, for the resonators, the radiation loss is the dominate loss mechanism and the dissipation in the waveguide structure itself, thus, contribute little to the final quality factor of the plasmonic resonators.

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“…A hybrid plasmon polariton (HPP) concept has been proposed to overcome this challenge 11,26,27 . This approach uses a high dielectric constant semiconductor strip separated from a metal surface by a nanoscale low dielectric constant gap.…”

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confidence: 99%

Experimental demonstration of low-loss optical waveguiding at deep sub-wavelength scales

et al. 2011

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Emerging communication applications call for a road map towards nanoscale photonic components and systems. Although metal-based nanostructures theoretically offer a solution to enable nanoscale photonics, the key demonstration of optical modes with deep sub-diffraction-limited confinement and significant propagation distances has not been experimentally achieved because of the trade-off between optical confinement and metallic losses. Here we report the first experimental demonstration of truly nanoscale guided waves in a metal-insulator-semiconductor device featuring low-loss and broadband operation. nearfield scanning optical microscopy reveals mode sizes down to 50×60 nm 2 at visible and nearinfrared wavelengths propagating more than 20 times the vacuum wavelength. Interference spectroscopy confirms that the optical mode hybridization between a surface plasmon and a dielectric mode concentrates the hybridized mode inside a nanometre thin gap. This nanoscale waveguide holds promise for next generation on-chip optical communication systems that integrate light sources, modulators or switches, nonlinear and quantum optics.

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Optical performance of single-mode hybrid dielectric-loaded plasmonic waveguide-based components

Cited by 148 publications

References 19 publications

Propagation Characteristics of Multilayer Hybrid Insulator-Metal-Insulator and Metal-Insulator-Metal Plasmonic Waveguides

Propagation Characteristics of Multilayer Hybrid Insulator-Metal-Insulator and Metal-Insulator-Metal Plasmonic Waveguides

Design of a Low Loss Silicon Based Hybrid Dielectric-Loaded Plasmonic Waveguide and a Compact High Performance Optical Resonator

Experimental demonstration of low-loss optical waveguiding at deep sub-wavelength scales

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