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We demonstrate continuous wave wavelength conversion between the near-IR) and mid-IR wavelength regimes based on sum-frequency generation (SFG) and difference-frequency generation (DFG) processes. Phase-matching (PM) is achieved for type-II nonlinear interaction using Bragg reflection waveguides. The normalized external conversion efficiency is estimated to be 26 %W-1 cm-2 for SFG in a 2.2 mm device...
The paper reports the design, fabrication and characterization of silicon-on-insulator (SOI) microring resonators using shallow etched rib waveguides. The variation of the Q-factor of microring resonators as a function of the ring diameter and coupling gap between the input waveguide and the ring is studied. Such structures are fabricated using e-beam lithography and reactive ion etching steps. Propagation...
Design, fabrication and characterization of SOI ring resonators using slightly etched rib waveguides are reported. Q-factor of 35300 has been measured for a 100 mum ring radius and a 450 nm coupling gap.
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