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The spectral behavior of suspended periodically tethered nanowires is investigated both theoretically and experimentally . The regularly spaced tethers act as a grating operating a codirectional coupling between the fundamental mode and the first-order transverse-electric (TE) mode for wide wires, and additionally a high order lateral distributed Bragg reflector effect in the case of narrow wires...
Low propagation losses have been measured for a one missing row photonic crystal waveguide on InP membrane operating in the slow light regime. This opens the route to optical pulse processing.
We have fabricated two-dimensional InP-based photonic crystal structures using Cl2/Ar inductively coupled plasma etching. Etched depth of 2.8 mum is obtained for 240 nm hole diameter with a nearly vertical shape. With this recipe, we are able to etch small features, as small as 110 nm, down to 1.9 mum. Optical qualification shows 80 dB/cm propagation losses in W3 InP/InGaAsP/InP photonic crystal waveguide
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