Article

# Efficient Photonic Crystal Cavity-Waveguide Couplers

Applied Physics Letters (Impact Factor: 3.52). 11/2006; DOI: 10.1063/1.2472534

Source: arXiv

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**ABSTRACT:**Waveguide coupling to closed loop coupled-resonator optical waveguides is explored. By coupling a CROW chain back on itself, a reduction in individual resonant linewidth is achieved making these slow light modes more conducive to periodic filters toward novel frequency-comb integration. Through numerical simulation by finite-difference time-domain methods, the importance of waveguide symmetry conditions for coupling is illustrated. The impact of unit cavity mode symmetry strongly impacts the necessary coupling geometry to both cavities and waveguides. Design insight into different waveguide coupling schemes is provided while aiming to achieve transmission of the resonant structure exhibited by the isolated resonator.Journal of Lightwave Technology 01/2013; 31(9):1426-1432. · 2.86 Impact Factor -
##### Conference Paper: Quantum Networks Consist of Semiconductor Quantum Dot and Cavity

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**ABSTRACT:**A hybrid quantum networks made of single-charged quantum dots and cavities, connected by fibers between cavity nodes, is illustrated. We show that how the state of quantum dot is manipulated by single photons, its functions in optical transport and phase control and thereafter its applications in quantum information transfer and entanglement generation. We give the dynamics of the system governed by the basic input-output equations for the cavity and single photons, and the corresponding numerical simulation.Photonics and Optoelectronics (SOPO), 2012 Symposium on; 01/2012 - [Show abstract] [Hide abstract]

**ABSTRACT:**The unidirectional coupling of a microcavity mode to a ridge waveguide in a slab photonic crystal structure was investigated for the first time. Experimental observation of the coupling efficiency for the signal coupled out of the structure is in good agreement with the result of three-dimensional finite-difference time-domain simulations. The coupling efficiency of the cavity mode to the output channel is ∼60%.Applied Physics Letters 01/2007; 90(19):193106-193106-3. · 3.52 Impact Factor

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