Coupled photonic crystal heterostructure nanocavities

O’Brien, D.; Settle, Michael; Karle, Timothy J.; Michaeli, Albert; Salib, M. S.; Krauss, Thomas F.

doi:10.1364/oe.15.001228

Cited by 78 publications

(48 citation statements)

References 12 publications

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“…Using photonic crystal as a means to integrate such a coupled system allows great potential for high density integration of waveguides and high-Q cavities that are readily reproducible in fabrication. There has been much work showing from both theory and experiment, that photonic crystal CCW systems can exploit the unique dispersive properties discussed previously for applications of slow light pulse compression and transparency [27][28][29][30]. Many different systems have been shown to stop light including traditional defect waveguides with side-coupled integrated sequence of resonators.…”

Section: Physical Designmentioning

confidence: 99%

Controlled On-Chip Single-Photon Transfer Using Photonic Crystal Coupled-Cavity Waveguides

Seigneur

Weed

Schoenfeld

2011

Advances in OptoElectronics

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To the end of realizing a quantum network on-chip, single photons must be guided consistently to their proper destination both on demand and without alteration to the information they carry. Coupled cavity waveguides are anticipated to play a significant role in this regard for two important reasons. First, these structures can easily be included within fully quantum-mechanical models using the phenomenological description of the tight-binding Hamiltonian, which is simply written down in the basis of creation and annihilation operators that move photons from one quasimode to another. This allows for a deeper understanding of the underlying physics and the identification and characterization of features that are truly critical to the behavior of the quantum network using only a few parameters. Second, their unique dispersive properties together with the careful engineering of the dynamic coupling between nearest neighbor cavities provide the necessary control for high-efficiency single-photon on-chip transfer. In this publication, we report transfer efficiencies in the upwards of 93% with respect to a fully quantum-mechanical approach and unprecedented 77% in terms of transferring the energy density contained in a classical quasibound mode from one cavity to another.

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Section: Physical Designmentioning

confidence: 99%

Controlled On-Chip Single-Photon Transfer Using Photonic Crystal Coupled-Cavity Waveguides

Seigneur

Weed

Schoenfeld

2011

Advances in OptoElectronics

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“…If we require more than 90% transmission, needs to be controlled within 5% error, 20 nm variation. In addition, in a 2-D coupled photonic crystal heterostructure nanocavities, it is known that guiding characteristics are sensitive to waveguide paremeters [27], therefore, the waveguide parameters of our 1-D PC-CROWs will also need to be well controlled.…”

Section: Miniaturization Of Taper Lengthmentioning

confidence: 99%

Design of Taper Structure for Highly Efficient Coupling Between 1-D Photonic Crystal Coupled Resonator Optical Waveguide and Straight Waveguide

Kawaguchi

Saitoh

Koshiba

2009

J. Lightwave Technol.

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Abstract-This paper presents a design method of a taper structure for highly efficient coupling between 1-D photonic crystal coupled resonator optical waveguides (1-D PC-CROWs) and input straight waveguides. We propose a new taper structure where not only air hole radius but also waveguide width are varied linearly in order to adjust the dispersion curves shift. By using the proposed tapered structure, we can connect each waveguide with high transmission over wide bandwidth. Our numerical simulation results show that a transmission of 98% around 1550 nm wavelength in a 6.6 m long taper can be obtained with a 42 nm bandwidth.Index Terms-Coupled resonator optical waveguide (CROW), finite-element method (FEM), photonic crystal.

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“…To this end, one approach is to confine light inside an optical cavity for as long as possible-a domain in which silicon photonic crystal (PhC) devices have demonstrated truly outstanding properties [1][2][3][4], with quality factors exceeding one million in cavities with modal volumes of the order of the cube of the resonance wavelength in the optical medium. A different approach-better suited for some applications [5]-involves slowing down the light propagation in a one-dimensional structure engineered for a low group velocity where, again, silicon PhCs have led to impressive results [6], particularly in line-defect waveguide systems [7][8][9][10] and in coupled-cavity waveguides (CCWs, also called coupled-resonator optical waveguides) [11][12][13][14][15][16][17].…”

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confidence: 99%

Wide-band slow light in compact photonic crystal coupled-cavity waveguides

Minkov

Savona

2015

Optica

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Slow light has a variety of applications, in particular for enhanced nonlinear effects like four-wave mixing and highharmonic generation. Here, we propose a photonic crystal coupled-cavity waveguide with an ultracompact arrangement of the constituent cavities in the propagation direction, and use an optimization algorithm to tune several structural parameters to engineer slow light with a constant group index n g over a wide bandwidth. We propose several specific silicon designs, including one with n g ≈ 37 over a 20 nm wavelength range and another one with n g ≈ 116 over an 8.8 nm band, which yields a group index-bandwidth product of 0.66-a record value among all slow-light devices. The design is experimentally beneficial because of its small footprint and straightforward fabrication and could find applications in optical storage or switching, and in generating quantum states of light.

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Coupled photonic crystal heterostructure nanocavities

Cited by 78 publications

References 12 publications

Controlled On-Chip Single-Photon Transfer Using Photonic Crystal Coupled-Cavity Waveguides

Controlled On-Chip Single-Photon Transfer Using Photonic Crystal Coupled-Cavity Waveguides

Design of Taper Structure for Highly Efficient Coupling Between 1-D Photonic Crystal Coupled Resonator Optical Waveguide and Straight Waveguide

Wide-band slow light in compact photonic crystal coupled-cavity waveguides

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