Dispersion-guided resonances in two-dimensional photonic-crystal-embedded microcavities

Tsia, Kevin K.; Poon, Andrew W.

doi:10.1364/opex.12.005711

Cited by 18 publications

(11 citation statements)

References 22 publications

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“…2, thus our simulations support a ray-tracing view of the cavity resonances. Unlike for dispersion-guided resonances in a square 2D photonic-crystal [8], we are able to explain the spectrum in terms of standing waves with a mode spacing of …”

Section: Numerical Simulationmentioning

confidence: 99%

Micro-fluidic dye ring laser - experimental tuning of the wavelength and numerical simulation of the cavity modes

Gersborg-Hansen

Balslev

Mortensen

2006

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference

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Abstract:We demonstrate wavelength tuning of a micro-fluidic dye ring laser. Wavelength tunability is obtained by controlling the liquid dye concentration. The device performance is modelled by FEM simulations supporting a ray-tracing view. Here, as in [2-4], a planar ring cavity consisting of two isosceles dielectric triangles and a micro-fluidic channel is considered. Fig. 1(a) shows a microscope image of the fabricated polymer device.The micro-fluidic dye ring laser was first demonstrated in [3]. Here, we demonstrate tunability of the laser wavelength by varying the dye concentration (Rhodamine 6G dissolved in ethanol), and the device is modelled by finite-element simulations.In the simulations, we study the full-wave nature of the TE cavity modes in the 2D geometry shown in Fig. 2(a) using the finite-element method (FEM) and compare the results to a plane-wave model. In the plane-wave view often used to explain the function of the laser [2-4], the cavity relies on total internal reflection of plane-waves at the interfaces between the glass/polymer triangles and the surrounding air at an incidence angle of 45°. Our simulation supports this picture and we explain the cavity modes as standing waves in the cavity.

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Section: Numerical Simulationmentioning

confidence: 99%

Micro-fluidic dye ring laser - experimental tuning of the wavelength and numerical simulation of the cavity modes

Gersborg-Hansen

Balslev

Mortensen

2006

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference

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“…They are also well known in technological processes. Some studies about the coupling between refractive waveguides and PhC have been already proposed, such as tapered fibers vertically coupled to PhC waveguides [6], ridge waveguides coupled to localized defect resonators in 2D PhC membranes [7], or side coupled to PhC Bloch modes below the light line in a 2D approach [8]. In this paper, the evanescent coupling between a refractive waveguide and vertical microcavities will be discussed.…”

Section: Introductionmentioning

confidence: 99%

Vertical microcavities based on photonic crystal mirrors for III-V/Si integrated microlasers

et al. 2008

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The on-coming photonic layer of CMOS integrated circuits needs efficient light sources to treat and transmit the flow of data. We develop new configurations of III-V/Si vertical cavity lasers coupled to silicon optical waveguides using mirror/coupler based on photonic crystals. These devices can be fabricated using fully CMOS-compatible technological steps. Using this approach, the optical gain is provided by the III-V material, while all the remaining part of the optical cavity is in silicon. The output coupling to the sub-µm waveguides of the CMOS optical layer can then be inherently optimised since the laser mirror/coupler and the Si output waveguides will be realised together during the same fabrication step.It has been demonstrated that photonic crystals membrane can act as very efficient reflectors (PCM-mirrors) for vertical microresonators [1]. In this communication, the design of a vertical cavity microlaser based on these PCM-mirrors will be presented. We will show that high Q-factors (>10000) along with strong vertical and lateral confinements can be achieved. As a first demonstration, experimental results on silicon PhC-mirrors and associated vertical cavities will be discussed, showing Q factors larger than 2000. Finally, theoretical results on the coupling between such cavities and a silicon micro-waveguide will be presented.

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“…The dispersion surfaces in the PCs can take many shapes that lead to interesting phenomena such as negative refraction, self-collimation, and super-prism effects [ 1] - [ 13 ]. Another class of periodic structures that has periodicities on the order of wavelengths or half-wavelengths, hence in a way similar to PCs, is the continuous anisotropic (unloaded) metallic grids, presented by Eleftheriades and Siddiqui in [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

Spatial-Filtering Microwave Devices Using Metallic Anisotropic Grids Over Ground

Siddiqui

Eleftheriades

2006

2006 European Microwave Conference

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In this review article we examine interesting resonance phenomena that result due to peculiar dispersion characteristics of continuous (unloaded) anisotropic grids along with corresponding applications. The phase space (k-space) of these metallic grids at resonant frequencies is characterized by isofrequency dispersion contours that have rectangular and hyperbolic shapes. As a result, energy propagation takes place in specified directions within the periodic structures, an effect called 'self-collimation'. Novel spatial-filtering and waveguiding devices could be implemented using these properties. Two such spatial-filtering devices using different configurations of anisotropic metallic grids will be reviewed: A microstrip harmonic splitter that separates 3 GHz from its 6 GHz harmonic and a highly selective 5.8/6.2 GHz microstrip diplexer.

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Dispersion-guided resonances in two-dimensional photonic-crystal-embedded microcavities

Cited by 18 publications

References 22 publications

Micro-fluidic dye ring laser - experimental tuning of the wavelength and numerical simulation of the cavity modes

Micro-fluidic dye ring laser - experimental tuning of the wavelength and numerical simulation of the cavity modes

Vertical microcavities based on photonic crystal mirrors for III-V/Si integrated microlasers

Spatial-Filtering Microwave Devices Using Metallic Anisotropic Grids Over Ground

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