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Photonic crystal
About: Photonic crystal is a research topic. Over the lifetime, 43424 publications have been published within this topic receiving 887083 citations.
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TL;DR: In this paper, a new type of waveguiding mechanism in three-dimensional photonic band-gap structures is demonstrated, where photons propagate through strongly localized defect cavities due to coupling between adjacent cavity modes, and high transmission of the electromagnetic waves, nearly 100%, is observed for various waveguide structures even if the cavities are placed along an arbitrarily shaped path.
Abstract: A new type of waveguiding mechanism in three-dimensional photonic band-gap structures is demonstrated. Photons propagate through strongly localized defect cavities due to coupling between adjacent cavity modes. High transmission of the electromagnetic waves, nearly 100%, is observed for various waveguide structures even if the cavities are placed along an arbitrarily shaped path. The dispersion relation of the waveguiding band is obtained from transmission-phase measurements, and this relation is well explained within the tight-binding photon picture. The coupled-cavity waveguides may have practical importance for development of optoelectronic components and circuits.
174 citations
TL;DR: In this paper, a new type of metallo-dielectric photonic band gap structure (PBG) was introduced, intentionally incorporating very strong capacitive interactions between the periodic metallic islands.
Abstract: We introduce a new type of metallo-dielectric photonic band gap structure (PBG), intentionally incorporating very strong capacitive interactions between the periodic metallic islands. The band gaps become huge, with the lower band edge frequency being pushed down by the capacitive interaction between metallic islands, while the upper band edge frequency continues to depend primarily on the lattice constant, as in normal PBG’s. With this new type of photonic crystal, the spatial periodicity can be much smaller than the corresponding electromagnetic wavelength, allowing PBG structures to play a role at radio frequencies. [S0031-9007(98)05629-4] PACS numbers: 42.70.Qs, 41.20.Jb, 78.70.Gq, 84.40. ‐ x
173 citations
01 Dec 1998
TL;DR: In photonic crystals, electromagnetic waves can be confined in all three dimensions leading to very small mode volumes as mentioned in this paper, which can lead to significant enhancement of spontaneous emission rates in semiconductor nano-cavities.
Abstract: In photonic crystals, electromagnetic waves can be confined in all three dimensions leading to very small mode volumes. Computational search has been for smallest electromagnetic mode which occurs in two-dimensional dielectric photonic crystals slabs. The smallest mode volume found was V/spl ap/2(/spl lambda//2n)/sup 3/, where n is the refractive index. This small mode volume can lead to significant enhancement of spontaneous emission rates in semiconductor nano-cavities due to the Purcell effect.
173 citations
TL;DR: In this article, a channel drop filter in a two-dimensional photonic crystal with a triangular lattice of air holes is presented, where the requirement of the accidental degeneracy of the frequency is achieved by tuning the radii of the air holes in the cavity system.
Abstract: A design of a channel drop filter in a two-dimensional photonic crystal with a triangular lattice of air holes is presented. The requirement of the accidental degeneracy of the frequency is achieved by tuning the radii of the air holes in the cavity system. In contrast to the other designs proposed, the present one does not involve either inclusion of additional materials or an extra small feature size.
173 citations
TL;DR: The guidance of dry micron-sized dielectric particles in hollow core photonic crystal fiber using an Argon ion laser beam operating at a wavelength of 514 nm is reported.
Abstract: We report the guidance of dry micron-sized dielectric particles in hollow core photonic crystal fiber The particles were levitated in air and then coupled to the air-core of the fiber using an Argon ion laser beam operating at a wavelength of 514 nm The diameter of the hollow core of the fiber is 20 m A laser power of 80 mW was sufficient to levitate a 5 m diameter polystyrene sphere and guide it through a ~150 mm long hollow-core crystal photonic fiber The speed of the guided particle was measured to be around 1 cm/s
173 citations