Waveguide bends in three‐dimensional layer‐by‐layer photonic bandgap materials

Sigalas, M. M.; Biswas, Rana; Ho, K. M.; Soukoulis, C. M.; Turner, Dave; Vasiliu, B.; Kothari, Suresh; Lin, Shawn Yu

doi:10.1002/(sici)1098-2760(19991005)23:1<56::aid-mop17>3.3.co;2-t

Cited by 4 publications

(4 citation statements)

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“…Therefore, there is great deal of interest in developing photonic crystal based waveguides where one can confine and efficiently guide the light around sharp corners [7,18,[26][27][28][29][30][31][32]. The basic motivation in photonic crystal based waveguides arose when the following properties of the PBG materials, which are essential for many applications, were considered.…”

Section: Planar Waveguidesmentioning

confidence: 99%

Microwave Applications of Photonic Crystals

Özbay¹,

Temelkuran²,

Bayındır³

2003

PIER

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Abstract-We have demonstrated guiding and bending of electromagnetic (EM) waves in planar and coupled-cavity waveguides built around three-dimensional layer-by-layer photonic crystals. We observed full transmission of the EM waves through these waveguide structures. The dispersion relations obtained from the experiments were in good agreement with the predictions of our waveguide models. We also reported a resonant cavity enhanced (RCE) effect by placing microwave detectors in defect structures. A power enhancement factor of 3450 was measured for planar cavity structures. Similar defects were used to achieve highly directional patterns from monopole antennas.

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Section: Planar Waveguidesmentioning

confidence: 99%

Microwave Applications of Photonic Crystals

Özbay¹,

Temelkuran²,

Bayındır³

2003

PIER

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“…A number of metallo-dielectric EBG structures have been studied extensively [28][29][30][31][32][33][34][35][36][37][38][39]. They have been shown to have several important properties that could be exploited in the optical regime for a variety of applications.…”

Section: Introductionmentioning

confidence: 99%

FDTD Simulations of Reconfigurable Electromagnetic Band Gap Structures for Millimeter Wave Applications

Ziolkowski¹

2003

PIER

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Abstract-Metallo-dielectric electromagnetic bandgap (EBG) structures are studied in the millimeter regime with a finite difference time domain (FDTD) simulator. Several EBG waveguiding structures are considered for millimeter-wave power splitting, switching and filtering operations. It is demonstrated that triangular EBG structures lend themselves naturally to the design of Y-power splitters. Square EBG structures with circular and square rods are shown to lead naturally to straight in-line waveguide filter applications. Comparisons between EBG millimeter-wave waveguide filters formed with dielectric and metallic rods are given. It is shown that high quality broad bandwidth, millimeter-wave bandstop filters can be realized with square EBG structures with circular metallic rods. It is demonstrated that multiple bandstop performance in a single device can be obtained by cascading together multiple EBG millimeter-wave waveguide filters. It is also demonstrated that one can control the electromagnetic power flow in these millimeter-wave EBG waveguide devices by introducing additional local defects. It is shown that the Y-power splitter can be made reconfigurable by using imposed current distributions to achieve these local defects and, consequently, that a millimeter-wave EBG switch can be realized.

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“…However, photon propagation traffic in and out from the defect-resonator has not been well developed for three-dimensional (3D) PC [7]. In fact there has been only little experimental progress on light propagation inside the PBG and mostly for line defects in 2D PC [7][8][9][10][11].…”

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confidence: 99%

Evidence for braggoriton excitations in opal photonic crystals infiltrated with highly polarizable dyes

Eradat

Sivachenko

Raǐkh

et al. 2002

Applied Physics Letters

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We studied angle-dependent reflectivity spectra of opal photonic crystals infiltrated with cyanine dyes, which are highly polarizable media with very large Rabi frequency. We show that when resonance conditions between the exciton-polariton of the infiltrated dye and Bragg frequencies exist, then the Bragg stop band decomposes into two reflectivity bands with a semi-transparent spectral range in between that is due to light propagation inside the gap caused by the existence of braggoriton excitations. These novel excitations result from the interplay interaction between the Bragg gap with spatial modulation origin and the polariton gap due to the excitons, and may lead to optical communication traffic inside the gap of photonic crystals via channel waveguiding.

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Waveguide bends in three‐dimensional layer‐by‐layer photonic bandgap materials

Cited by 4 publications

References 0 publications

Microwave Applications of Photonic Crystals

Microwave Applications of Photonic Crystals

FDTD Simulations of Reconfigurable Electromagnetic Band Gap Structures for Millimeter Wave Applications

Evidence for braggoriton excitations in opal photonic crystals infiltrated with highly polarizable dyes

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