We present a number of compact wavelength selective
elements implemented in silicon-on-insulator photonic wires. These include arrayed waveguide gratings, Mach-Zehnder lattice filters and ring resonators. The circuits were fabricated with deep UV lithography. We also address the sensitivity of photonic wires to phase noise by selectively broadening the waveguides, and demonstrate this in a compact AWG with -20dB crosstalk and an insertion loss of 2.2dB for the center channels.
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