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A schematic diagram of the PC-SMZ all-optical switch.
The band diagram for a TE-like mode in the direction. Transmission spectra experimentally obtained for (b) straight and (c) 60° double-bend waveguides. The spectral range for both spectra shows good agreement with the theoretical range under the light line in (a).
(a) An optical micrograph of the fabricated PC-SMZ structure. Scanning electron microscope images of (b) the cleaved end of the line-defect waveguide and (c) the directional coupler. Theoretical power transfers for coupling lengths of (d) , (e) , and (f) .
(Color) Transmission characteristics for (a) a single directional coupler, (b) doubly stacked directional couplers, and (c) the PC-SMZ structure.
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