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Design considerations for quasi-planar, high-Q, silicon-on-insulator microphotonic resonators are presented. A figure of merit for use in comparison between microphotonic designs is presented and applied to compare existing and proposed designs.
We review major developments that have led to a high performance, polarization independent, microphotonic circuit. The design and fabrication of complex high-order microring-resonators, along with techniques to freely manipulate polarization states on-chip are presented.
The second- and third-harmonics enhancement in birefringent silicon-based photonic crystals and microcavities at the photonic band gap edge due to fulfilment of phase matching condition is controlled due to anisotropy of porous silicon dielectric function.
We propose silicon waveguide-coupled octagonal microresonators with directional coupling to single modes. Numerical simulations suggest that the k-vectors in waveguide-coupled large-sized octagonal microstructures are directional. Experiments demonstrate two modes from a waveguide-coupled 50-mum-size octagonal microresonator.
Continuous-wave, visible emission from a silica microresonator on silicon by third harmonic generation is demonstrated. Emission is observed with pump powers <300 muW. This result opens the possibility of silicon microphotonic devices spanning from UV to NIR.
We experimentally demonstrate the potential for using micro-cavities coupled to a photonic crystal waveguide as an optically tunable wavelength filter or modulator. This scheme is capable of giga-hertz speeds and low operating power.
Fiber coupled silicon nitride microcavities with Q > 3.6 times 106 and effective mode volume < 10(lambda/n)3 at wavelengths resonant with alkali atom transitions are robustly integrated with magnetostatic atom-chips.
We design a silicon MMI crossing laterally coupled microring resonator-based cross-connect filter. Numerical simulations suggest our design exhibits reduced insertion loss, reduced crosstalk, and more symmetric Lorentzian lineshapes as compared with the conventional plain-crossing-microring design.
Using ion beam implantation of erbium a silica micro-disk laser on silicon chip is demonstrated. A clear transition of spontaneous emission to stimulated emission is observed, with threshold powers of less than 40 micro-Watts.
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