Efficient Analysis and Design of Low-Loss Whispering-Gallery-Mode Coupled Resonator Optical Waveguide Bends

Pishko, S.V.; Sewell, P.; Benson, T.M.; Boriskina, Svetlana V.

doi:10.1109/jlt.2007.903295

Cited by 36 publications

(47 citation statements)

References 32 publications

(49 reference statements)

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“…To demonstrate a general physical concept rather than optimized engineering solutions, we consider model structures composed of spherical micro-and nanoparticles and analyze them within the framework of the generalized Mie theory (GMT) (detailed in Methods) (22)(23)(24). One possible realization of an optoplasmonic superlens is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…For example, locally addressable on-chip electrical detection of surface plasmons has already been successfully demonstrated by using germanium wires (30), gallium arsenide structures (31), organic photodiodes (32), and superconducting single-photon detectors (33). Finally, light trapped in the optical microcavity can be evanescently out-coupled into an optical fiber (34), a planar optical waveguide (35,36), or into another microcavity resonator (24,37). The combination of dramatic field nanoconcentration and cascaded signal enhancement in optoplasmonic superlenses with the possibility of the on-chip routing and detection of the amplified signal paves the way for the realization of sensitive "dark" optoplasmonic platforms for single-molecule detection.…”

Section: Resultsmentioning

confidence: 99%

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Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Boriskina

Reinhard

2011

Proc. Natl. Acad. Sci. U.S.A.

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Energy transfer between photons and molecules and between neighboring molecules is ubiquitous in living nature, most prominently in photosynthesis. While energy transfer is efficiently utilized by living systems, its adoption to connect individual components in man-made plasmonic nanocircuits has been challenged by low transfer efficiencies that motivate the development of entirely new concepts for energy transfer. We introduce herein optoplasmonic superlenses that combine the capability of optical microcavities to insulate molecule-photon systems from decohering environmental effects with the superior light nanoconcentration properties of nanoantennas. The proposed structures provide significant enhancement of the emitter radiative rate and efficient long-range transfer of emitted photons followed by subsequent refocusing into nanoscale volumes accessible to near-and far-field detection. Optoplasmonic superlenses are versatile building blocks for optoplasmonic nanocircuits and can be used to construct "dark" single-molecule sensors, resonant amplifiers, nanoconcentrators, frequency multiplexers, demultiplexers, energy converters, and dynamical switches.nanophotonics | optical information processing | optical sensing | plasmonics N onradiative energy transfer between nanoobjects is limited to distances of only a few nanometers, making photons the most attractive long-distance signal carriers. However, once the photon is emitted by a donor quantum emitter, the probability of acceptor absorbing its energy becomes negligibly small. Therefore, realizing efficient and controllable on-chip interactions between single photons and single quantum emitters, which are crucial for single-molecule optical sensing and quantum information technology, remains challenging. This problem is mitigated by optical microcavities (OMs), which can significantly boost the probability of a photon reabsorption through acceptor molecules (1) via efficient trapping and recirculating of photons (2). OMs also strongly modify radiative rate of emitters at select frequencies corresponding to cavity modes, which can provide local density of optical states (LDOS) exceeding that of the free space by orders of magnitude (2-5). In turn, noble-metal nanostructures can enhance emission of free-space photons by excited molecules (effectively acting as nano-analogs of radio antennas) (6-12) or facilitate relaxation by coupling to surface plasmons (SPs) (13-15). Consequently, both plasmonic nanostructures and OMs can modify the LDOS (16, 17), but the OM approach suffers from limited accessibility of the intracavity volume by target molecules [which should either be incorporated into the cavity material (3, 4) or interact with photonic modes via their weak evanescent tails (5,(18)(19)(20)], while high dissipative losses in metals create fundamental limitations for long-distance energy and information transfer through surface plasmons (21). Results and DiscussionIn this paper, we develop a previously undescribed approach for photon generation and energy tra...

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Boriskina

Reinhard

2011

Proc. Natl. Acad. Sci. U.S.A.

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“…Among the few examples are the FEM modules in the commercial package (JCMwave GmbH), and academic programs of more numerical (Sopaheluwakan 2006) (FEM) or analytical character Prkna 2004;Boriskina 2006) (circular cavities). Probably also the near field solutions at resonances (scattered field part) generated by a computational treatment of specific scattering problems (Boriskina et al 2004Pishko et al 2007), for individual, suitably shaped cavities could be used for this purpose. A third alternative would be to employ real-frequency eigensolutions for the open, leaky individual cavities with artificial gain ("lasing eigenvalue problem" Smotrova and Nosich 2004;Smotrova et al 2006).…”

Section: Hcmt Resultsmentioning

confidence: 99%

“…Ref. Pishko et al 2007 for a discussion of CROW supermodes), where the extremal profiles supported by the composite, longer chains are made up from properly placed copies of the single-cavity field, superimposed systematically with specific relative amplitudes. Denoting the single cavity mode, with a phase / sign as shown, by a symbol [+], the supermodes of the two-cavity chain could be classified as ) for the resonances of the three-cavity chain.…”

Section: Chain Propertiesmentioning

confidence: 99%

Chains of coupled square dielectric optical microcavities

Hammer

2008

Opt Quant Electron

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Chains of coupled square dielectric cavities are investigated in a 2-D setting, by means of a quasi-analytical eigenmode expansion method. Resonant transfer of optical power can be achieved along quite arbitrary, moderately long rectangular paths (up to 9 coupled cavities are considered), even with individual standing-wave resonators of limited quality. We introduce an ab-initio coupled mode model, based on a simple superposition of slab mode profiles as a template for the field of individual cavities. Although no loss mechanisms are built in, the model can still help to interprete the results of the former numerical experiments.

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“…The Vacuum-Rabi-splitting (VRS) is well described with the Jaynes-Cummings model [5]. coupled resonator optical waveguides (CROWs) are investigated in [6]. Suitably arranged arrays of coupled resonators with embedded quantum dots can be utilized to build up distributed quantum networks.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the coupling between microdisk modes and quantum dots

Declair

Meier

Förstner

2011

Phys. Status Solidi (c)

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We numerically investigate the coupling between circular resonators and study strong light‐matter coupling of single as well as multiple circular resonators to quantum‐mechanical resonators in two dimensional model simulations. For all cases, the computed resonances of the coupled system as function of the detuning show anti‐crossings.The obtained mode splittings of coupled optical resonators are strongly depending on distance and cluster in almost degenerate eigenstates for large distances, as is known from coupled resonator optical waveguides. Vacuum Rabi splitting is observed for a quantum dot strongly coupled to eigenmodes of single perfectly cylindrical resonators. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Efficient Analysis and Design of Low-Loss Whispering-Gallery-Mode Coupled Resonator Optical Waveguide Bends

Cited by 36 publications

References 32 publications

Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Chains of coupled square dielectric optical microcavities

Numerical investigation of the coupling between microdisk modes and quantum dots

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