Efficient color routing with a dispersion-controlled waveguide array

Liu, Yikun; Wang, Si-Cong; Li, Yong-Yao; Song, Liying; Xie, Xiangsheng; Feng, Mang; Xiao, Zhiming; Deng, Shaozhi; Zhou, Jianying; Li, Juntao; Wong, Kam Sing; Krauss, Thomas F.

doi:10.1038/lsa.2013.8

Cited by 19 publications

(7 citation statements)

References 16 publications

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“…In addition, the wavelength-selective properties of plasmonic waveguides and other waveguides are also usable in the BUS system. 62,63 SPP waveguide detector as an interface to an electric circuit The principle of the plasmonic circuit is consistent with traditional electronics, and the two types must be integrated together to adapt existing electronic devices. Thus, it is important to convert the plasmonic signal to electric signals.…”

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confidence: 99%

Nanoplasmonic waveguides: towards applications in integrated nanophotonic circuits

2015

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The properties of propagating surface plasmon polaritons (SPPs) along one-dimensional metal structures have been investigated for more than 10 years and are now well understood. Because of the high confinement of electromagnetic energy, propagating SPPs have been considered to represent one of the best potential ways to construct next-generation circuits that use light to overcome the speed limit of electronics. Many basic plasmonic components have already been developed. In this review, researches on plasmonic waveguides are reviewed from the perspective of plasmonic circuits. Several circuit components are constructed to demonstrate the basic function of an optical digital circuit. In the end of this review, a prototype for an SPP-based nanochip is proposed, and the problems associated with building such plasmonic circuits are discussed. A plasmonic chip that can be practically applied is expected to become available in the near future. Keywords: nanophotonics; plasmonic chip; plasmonic circuit; surface plasmons; waveguide INTRODUCTIONThe technologies of semiconductor integrated circuits and modern electronic integrated devices are rapidly approaching their fundamental limits in terms of both speed and data transmission rate (DTR).1 One of the promising solutions to these problems is using light rather than electrons in the functional processing components.2 However, the feasibility of fabricating nanoscale photonic devices may be limited because the diffraction limit of light is dominant when the size of a photonic device is close to or smaller than the wavelength of light in the material. Surface plasmon polaritons (SPPs), electromagnetic waves coupled to charge oscillation at the metal dielectric interface, can circumvent the diffraction limit and achieve localisation of electromagnetic energy in nanoscale regions that are considerably smaller than the wavelengths of light in the material. 3 The electromagnetic field perpendicular to the interface between metal and dielectric decays exponentially with distance from the metal surface while maintaining the long-range propagation of electromagnetic energy along the surface. This essential feature of SPPs can enable the fabrication of photonic components and optical signal processing devices at the sub-wavelength scale.Surface plasmons (SPs) include the localised type (localised surface plasmons, LSPs) and propagating type (propagating surface plasmon polaritons, PSPPs). For the purpose of optical signal transportation and nanophotonic circuits, only PSPPs will be considered in this review, and they are referred to as SPPs hereafter. Because of the unique properties of tightly confined SPPs on metal structures, various types of metallic nanostructures, such as nanoparticle chains, 4-7 thin metal films, 8 metal slits, 9 grooves, 10 chemically synthesised metal nanowires (NWs)

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confidence: 99%

Nanoplasmonic waveguides: towards applications in integrated nanophotonic circuits

2015

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“…To gain a deep understanding of light out‐coupling mechanisms of periodic and quasirandom nanostructures in FOLEDs, the field intensity distributions are calculated using the finite‐difference‐time‐domain (FDTD) method (see the Experimental Section and Supporting Information for the detailed procedure of the optical modeling). Instead of the widely used plane wave or Gaussian beam for optical simulation in previous reports, the dipole (at 520 nm) is chosen as the light source to simulate relatively real situation in FOLEDs (Figure S9, Supporting Information) . The near‐field distributions of these devices are illustrated in Figure S10 (Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Broadband Light Out‐Coupling Enhancement of Flexible Organic Light‐Emitting Diodes Using Biomimetic Quasirandom Nanostructures

Wang

et al. 2014

Advanced Optical Materials

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Flexible organic light-emitting diodes are gaining increasing importance as a leading technology for high-quality displays and lighting in wearable electronics due to their low power consumption, excellent color gamut, and the desirable mechanical fl exibility with soft materials and curvilinear surfaces. However, further enhancements in effi ciency are still challenging because of the optical confi nement and limited light out-coupling effi ciency. Here, a simple and wavelength-independent light extraction scheme is demonstrated using the biomimetic quasirandom nanostructures that can simultaneously enhance the out-coupling of the waveguided light and allow the minimized ohmic losses without spectral distortion. Compared to periodic grating structures, the nanoimprinted quasirandom nanostructures can broaden the periodicity and randomize the emission directionality, leading to the superiority of color stability over the visible wavelength range for a large variation of viewing angles. The resulting external quantum effi ciency and current effi ciency are 1.51 and 1.43 times that of a conventional fl exible organic lightemitting diode used as a comparison, respectively.

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“…Recently, guiding wave by means of resonance periodic systems can gain more freedom to control the light fields. [25][26][27][28][29][30][31][32][33][34] Among these phenomena, discrete solitons, [35][36][37] which is governed by the balance between optical tunneling to adjacent sites (or waveguides) and nonlinearity, attract great attention. It was predicted that discrete soliton in nonlinear waveguide array networks can provide a rich environment for all-optical data processing applications: they can realize intelligent functional operations such as routing, blocking, logic functions and time-gating.…”

Section: Introductionmentioning

confidence: 99%

Solitary vortices in two-dimensional waveguide matrix

Chen

Huang

2015

J. Nonlinear Optic. Phys. Mat.

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We consider the nonlinear propagation of an optical beam in a two-dimensional waveguide matrix, which is described by the discrete nonlinear Schrödinger equation with a self-focusing nonlinearity. Our study focuses on the stability domain of the discrete vortex solitons with its topological invariant S equal to 1. Such domain is identified with the propagation constant k and the coupling constant C. Our simulations show that there is a critical value Ccr for any fixed value of k. At C ≤ Ccr, the stable domain is continuous. However, at C > Ccr, the stable domain becomes discontinuous and fuzzy. The distribution of the continuous stable regions is identified and plotted. Moreover, we give the relation of the total power P to C and k, which enable us to figure out the continuous stability area through the (P, C) plane.

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Efficient color routing with a dispersion-controlled waveguide array

Cited by 19 publications

References 16 publications

Nanoplasmonic waveguides: towards applications in integrated nanophotonic circuits

Nanoplasmonic waveguides: towards applications in integrated nanophotonic circuits

Broadband Light Out‐Coupling Enhancement of Flexible Organic Light‐Emitting Diodes Using Biomimetic Quasirandom Nanostructures

Solitary vortices in two-dimensional waveguide matrix

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