Light Propagation in Singly and Doubly Periodic Planar Waveguides

Zengerle, R.

doi:10.1080/09500348714551531

Cited by 228 publications

(136 citation statements)

References 12 publications

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“…The dispersion relation at frequencies in the vicinity of a band gap was measured in singly periodic planar waveguide via a prism coupler 21,22 in a photonic crystal structure loaded with quantum dots 23 and recently in a passive photonic crystal waveguide with phasesensitive scanning near-field optical microscopy. 24 Such studies focused mainly on the real part of the wave vector and did not reveal the role played by the disorder.…”

Section: Introductionmentioning

confidence: 99%

Influence of residual disorder on the anticrossing of Bloch modes probed inkspace

et al. 2008

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We retrieve the dispersion properties of photonic crystal waveguides near the band edge with high experimental accuracy. The dispersion diagram of the waveguide modes in the complex-valued plane is directly measured in the far field by using a Fourier space imaging technique. We show that the investigation of the modes in k space provides a clear signature of the transition between propagating, evanescent, and localized modes. It allows us to determine the impact of the structural disorder and of the dissipation on the group velocity of the propagating wave in the slow light regime.

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Section: Introductionmentioning

confidence: 99%

Influence of residual disorder on the anticrossing of Bloch modes probed inkspace

et al. 2008

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“…[13][14][15][16][17] There is currently much interest in the application of two-dimensional microstructuring to a variety of optical systems, such as providing in-plane confinement of certain microcavity modes, 18 complete band gaps for surface modes, 19 enhanced light extraction and out-of-plane scattering of guided modes, [20][21][22] and feedback for organic microcavity lasers. 23 In this paper, surface microstructuring 24 is used to provide band gaps for the guided modes of microcavities based on metallic mirrors. Waveguide modes are recognized as being a significant source of loss in emissive microcavity devices, most notably when the emission takes place from within a material of high refractive index.…”

Section: Introductionmentioning

confidence: 99%

Flat photonic bands in guided modes of textured metallic microcavities

Salt

Barnes

2000

Phys. Rev. B

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A detailed experimental study of how wavelength-scale periodic texture modifies the dispersion of the guided modes of /2 metal-clad microcavities is presented. We first examine the case of a solid-state microcavity textured with a single, periodic corrugation. We explore how the depth of the corrugation and the waveguide thickness affect the width of the band gap produced in the dispersion of the guided modes by Bragg scattering off the periodic structure. We demonstrate that the majority of the corrugation depths studied dramatically modify the dispersion of the lowest-order cavity mode to produce a series of substantially flat bands. From measurements of how the central frequency of the band gap varies with direction of propagation of the guided modes, we determine a suitable two-dimensional texture profile for the production of a complete band gap in all directions of propagation. We then experimentally examine band gaps produced in the guided modes of such a two-dimensionally textured microcavity and demonstrate the existence of a complete band gap for all directions of propagation of the lowest-order TE-polarized mode. We compare our experimental results with those from a theoretical model and find good agreement. Implications of these results for emissive microcavity devices such as light-emitting diodes are discussed.

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“…In addition, self-collimation has also been demonstrated in acoustics [6,7], and exciton-polariton condensates [8], though the study of the phenomenon is more advanced in the field of optics. The propagation of nondiffractive beams was initially observed in photonic crystals (PhCs), i.e., structured materials presenting a spatial modulation of the refraction index on the wavelength scale [9][10][11][12][13][14][15]. Later, similar beam propagation effects were proposed in gain-loss modulated materials (GLMMs) [16,17].…”

Section: Introductionmentioning

confidence: 84%

Self-collimation in PT -symmetric crystals

et al. 2017

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We predict the self-collimation phenomena (or equivalently, dynamical localization) in two-dimensional PTsymmetric complex potentials, where the complex modulation is considered in the transverse, longitudinal, or simultaneously in both directions. Nondiffractive propagation is analytically predicted and further confirmed by numerical integration of a paraxial model. The parameter space is explored to identify the self-collimation regime in crystals with different PT symmetries. In addition, we also analyze how the PT -symmetric potentials determine the energy distribution between spatial modes of the self-collimated beams.

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Light Propagation in Singly and Doubly Periodic Planar Waveguides

Cited by 228 publications

References 12 publications

Influence of residual disorder on the anticrossing of Bloch modes probed inkspace

Influence of residual disorder on the anticrossing of Bloch modes probed inkspace

Flat photonic bands in guided modes of textured metallic microcavities

Self-collimation in PT -symmetric crystals

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