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We propose an electrooptic photonic crystal with a periodically poled lithium niobate (PPLN) waveguide structure based on electrooptic effect, where the group velocity of input optical beam can be continuously modulated from subluminal to superluminal by adjusting the applied external electric field in the z-direction of the crystal. The slow light propagation at the band edges was investigated and...
We demonstrate electrically tunable long-period grating in fluid-filled solid-core photonic bandgap fiber (PBGF) using acoustic waves. We show that highly dispersive nature of PBGF modes results in very narrow-band rejection in spectrum.
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