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We report an SOI based adiabatic splitter, with velocity and coupling tapered simultaneously. Output uniformity better than 0.2 dB is obtained in 100 nm wavelength range measured, with low excess loss about 0.3 dB.
We report a 44 Gbit/s silicon Mach-Zehnder modulator based on interleaved PN junctions. Modulation efficiency of VπLπ=1.5∼2.0 V·cm and carrier induced loss of ∼1dB/mm are obtained with a moderate doping density of 2×1017 cm−3.
Novel folding 8 times 8 matrix switches based on silicon on insulator were demonstrated. In the design, single-mode rib waveguides and multimode interferences are connected by optimized tapered waveguides to reduce the mode coupling loss between the two types of waveguides. The self-aligned method was applied to the key integrated turning mirrors for perfect positions and low loss of them. A mixed...
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