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In this paper, we demonstrate state-of-the-art slow light in silicon-on-insulator photonic crystal coupled waveguide, which allows slow light pulse transmission and its tunable delay by means of structural chirping. The key idea of this study is the application of a folded chirping profile to the structure, instead of the conventional monotonous chirping. It suppresses unwanted spectral oscillation...
Optical buffering and nonlinear enhancement is demonstrated using slow light in photonic crystal waveguide devices. Nearly 350 ps delay and tunability are obtained in a narrowband device, while 22 bit tunability in a wideband device.
Semiconductor photonic nanostructures, i.e. photonic crystals (PCs) and high index contrast structures (HICs), have become worldwide topics in this decade. They strongly control light emission and propagation, and so allows novel phenomena and device applications. PCs are artificial muIt i-dimensional periodic structures whose period is of the order optical wavelength. Through active studies in these...
Recent progress on mu-photonic devices in Si photonics are presented. Slowlight in photonic crystal waveguides optimized for optical buffering and signal processing is discussed. A polarization-insensitive mu-AWG based on photonic wire waveguides is also demonstrated.
A low group velocity of c/130 was obtained under zero GVD condition in photonic crystal coupled waveguides, which will be effective for optical buffering.
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