Chip-integrated all-optical diode based on nonlinear plasmonic nanocavities covered with multicomponent nanocomposite

Chai, Zhen; Hu, Xiaoyong; Yang, Hong; Gong, Qihuang

doi:10.1515/nanoph-2016-0127

Cited by 22 publications

(19 citation statements)

References 42 publications

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“…Therefore, SPR resonant excitation of gold nanoflowers contributes to the third-order optical nonlinearity reinforcement of nano-Au:(IR140:MEH-PPV) nanocomposite when the incident signal light wavelength was around 800 nm [44]. According to our previous closed-aperture Z-scan experiment, the nonlinear refractive index was measured to be -1.3 × 10 −4 cm 2 /kW for the nanocomposite nano-Au:(IR140:MEH-PPV) excited by a 120-fs laser beam with a wavelength around 800 nm [43], which is eight orders of magnitude larger than that of SiO 2 , 1 × 10 −12 cm 2 /kW [45]. This means the feasibility of utilizing the nonlinear effect of nanocomposite nanoAu:(IR140:MEH-PPV) to achieve low threshold all-optical tunability.…”

Section: The Half-addermentioning

confidence: 94%

“…The measured linear transmission spectrum is shown in Figure 1D. A narrow transmission peak appeared in a broad transmission forbidden band, indicating the formation of PIT transparency window, which originates from the interference coupling between two resonance modes provided by the long and short plasmonic nanogrooves [43,44]. The central wavelength and the peak transmission of the transparency window were 800 nm and 80%, respectively, which are in agreement with the calculated one using the finite element method (employing the commercial software package COMSOL Multiphysics, Burlington, USA), as shown in Figure 1E.…”

Section: The Half-addermentioning

confidence: 99%

“…Finally, a 100-nmthick nano-Au:(IR140:MEH-PPV) film was deposited onto the upper surface of the full-adder sample by using spin coating method, and the doping concentrations for IR140 and gold nanoflowers were 15% and 10%, respectively. The nanoflowers synthesized by HAuCl 4 have a solid core connected with plentiful pinnacles with a length ranging from 10 to 20 nm, the size of which has a relatively large distribution [43,44]. The SEM image for a 100-nm-thick nano-Au:(IR140:MEH-PPV) nanocomposite films deposited on a silica substrate is shown in Figure 1C.…”

Section: The Half-addermentioning

confidence: 99%

“…The SEM image for a 100-nm-thick nano-Au:(IR140:MEH-PPV) nanocomposite films deposited on a silica substrate is shown in Figure 1C. In our previous work, the linear absorption spectrum of a nanoAu:(IR140:MEH-PPV) film was measured using a visiblenear-infrared absorption spectrum measurement system (LABRAM-HR800, Horiba, Japan) [43]. The results indicated that at the wavelength range from 650 to 880 nm, a linear absorption band appeared originating from the component IR140.…”

Section: The Half-addermentioning

confidence: 99%

“…Thus, when the wavelength of incident signal light is located near 800 nm, the third-order nonlinearity of the nanocomposite can be greatly enhanced under the circumstance of resonant excitation-enhancing nonlinearity effect and the field reinforcement effect provided by the plasmonic nanocavity mode. Moreover, the surface plasmon resonance (SPR) peak of gold nanoflowers was around 800 nm owing to a relatively large size distribution [43]. Therefore, SPR resonant excitation of gold nanoflowers contributes to the third-order optical nonlinearity reinforcement of nano-Au:(IR140:MEH-PPV) nanocomposite when the incident signal light wavelength was around 800 nm [44].…”

Section: The Half-addermentioning

confidence: 99%

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Ultracompact all-optical full-adder and half-adder based on nonlinear plasmonic nanocavities

Xie

Niu

et al. 2017

Nanophotonics

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Ultracompact chip-integrated all-optical halfand full-adders are realized based on signal-light induced plasmonic-nanocavity-modes shift in a planar plasmonic microstructure covered with a nonlinear nanocomposite layer, which can be directly integrated into plasmonic circuits. Tremendous nonlinear enhancement is obtained for the nanocomposite cover layer, attributed to resonant excitation, slow light effect, as well as field enhancement effect provided by the plasmonic nanocavity. The feature size of the device is <15 μm, which is reduced by three orders of magnitude compared with previous reports. The operating threshold power is determined to be 300 μW (corresponding to a threshold intensity of 7.8 MW/cm 2 ), which is reduced by two orders of magnitude compared with previous reports. The intensity contrast ratio between two output logic states, "1" and "0," is larger than 27 dB, which is among the highest values reported to date. Our work is the first to experimentally realize on-chip halfand full-adders based on nonlinear plasmonic nanocavities having an ultrasmall feature size, ultralow threshold power, and high intensity contrast ratio simultaneously.This work not only provides a platform for the study of nonlinear optics, but also paves a way to realize ultrahighspeed signal computing chips.

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Section: The Half-addermentioning

confidence: 94%

Section: The Half-addermentioning

confidence: 99%

Section: The Half-addermentioning

confidence: 99%

Section: The Half-addermentioning

confidence: 99%

Section: The Half-addermentioning

confidence: 99%

See 3 more Smart Citations

Ultracompact all-optical full-adder and half-adder based on nonlinear plasmonic nanocavities

Xie

Niu

et al. 2017

Nanophotonics

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Plasmonic Sensing and Modulation Based on Fano Resonances

Chen

Gan

Wang

et al. 2018

Advanced Optical Materials

109

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The rapid developments in nanotechnology and plasmonics allow the manipulation of light at nanometer scales, such as light propagation and resonances. Differing from the symmetric Lorentzian‐like profiles in the conventional resonances, Fano resonances, which originate from the interference of different resonant modes, exhibit obviously asymmetric spectral profiles. Based on lineshape engineering, the Fano resonances with sharp asymmetric profiles exhibit a small linewidth and a high spectral contrast by exploiting different mechanisms and designing various metallic nanostructures. Both of the above properties in the sharp Fano resonances have significant applications in nanoscale plasmonic sensors and modulators. This review summarizes the underlying mechanism of the Fano resonances in various metallic nanostructures. Then, practical applications of the Fano resonances in nanoscale plasmonic sensing and modulation are reviewed. At last, the development and challenges of plasmonic sensing and modulation based on Fano resonances are discussed.

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Fano Resonance in Artificial Photonic Molecules

Cao

Dong

Zhou

et al. 2020

Advanced Optical Materials

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photonic applications, such as optical switching, [6][7][8][9] sensing, [10][11][12][13][14][15] nonreciprocal propagation, [16][17][18][19][20][21] modulation, [22][23][24][25][26] optical logic gates, [27][28][29] and light buffering and storage. [3,[30][31][32][33][34][35] The Fano line shape profiles are related to the system's structural parameters and the electromagnetic parameters of ambient media. So, various systems, including optical cavities, [36][37][38][39] nanoclusters, [40][41][42][43] photonic crystals, [44][45] gratings, [46][47][48][49] metamaterials, [50][51][52][53] metasurfaces, [54][55][56][57] and many others, [58][59][60][61][62][63] have been proposed theoretically and observed experimentally to exhibit Fano resonance. Inspired by recent progress in numerous novel materials, [64][65][66][67][68][69] including 2D materials with exotic optoelectronic properties, [70][71][72] superconducting materials, [73,74] phase-changed materials, [75,76] low loss dielectric materials [77,78] and quantum dots, [79][80][81][82] many opportunities to investigate Fano resonance are anticipated.It is well-known that the macroscopically arrayed structures are typically too bulky for highly integrated on-chip optical circuits, thus, compact photonic structures are in high demand. [83][84][85] Optical microcavities, with high quality (high-Q) factors, convenient all-optical control, and compatibility with on-chip fabrication, have been used extensively for sophisticated optical devices, such as isolators, [86] lasers, [87] circuits, [88] sensors, [89][90][91] and buffers, [92,93] with distinctive properties. Based on the similarities between the classical electromagnetism and quantum mechanics, a single cavity and coupled-cavity can be referred to as artificial photonic atom and photonic molecule, [94][95][96] respectively. Analogous to the single atom molecule, a single cavity can also be referred to as a photonic molecule. The spectral response arising from the coherent interaction of optical modes depends heavily on the configuration of the artificial photonic molecules. [97][98][99] Over the years, sorts of photonic molecules have been implemented as key building blocks for realizing Fano resonance, [83,85,[88][89][90][91]100,101] thanks to the interactions between optical modes as illustrated in Figure 1a. The Fano profiles have been both experimentally and theoretically studied with numerous interesting physical phenomena revealed by the coupled oscillator model, [83,86,102] temporal coupled-mode theory, [103][104][105][106][107] transfer matrix method, [108][109][110] and quantumoptics approach. [111,112] In this work, we focus on reviewing the Fano resonance in artificial photonic molecules. We first introduce the properties of Fano resonance. Specifically, we discussThe spectral signatures of chemical molecules are dependent on the hybridization of electronic states. The artificial photonic molecules formed by structured optical microcavities, exhibiting Fano features with sharp asymmetric line shape a...

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Chip-integrated all-optical diode based on nonlinear plasmonic nanocavities covered with multicomponent nanocomposite

Cited by 22 publications

References 42 publications

Ultracompact all-optical full-adder and half-adder based on nonlinear plasmonic nanocavities

Ultracompact all-optical full-adder and half-adder based on nonlinear plasmonic nanocavities

Plasmonic Sensing and Modulation Based on Fano Resonances

Fano Resonance in Artificial Photonic Molecules

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