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A hybrid silicon photonic integrated filter is proposed and demonstrated with a novel structure. This filter incorporates a ring resonator in one arm of a Mach-Zehnder interferometer making it possible to obtain a programmable filter response. The optical filter consists of a 5-mm-long delay loop made of low-loss silicon waveguides with integrated thermal modulators resulting in a 0.164-nm free spectral...
This study demonstrates the concept of controlling the quality factor of a micro-cantilever using hydrodynamic coupling of active mechanical structures. The active micro structures (auxiliary-cantilevers) adjacent to the micro-cantilever (operating-cantilever) are exploited to generate hydrodynamic force to change the air damping of the operating-cantilever. Thus, the quality factor of operating-cantilever...
We demonstrate a chaotic microcavity laser which not only produces unidirectional emission but also has a quality factor of 22000. The output beam has a divergence angle less than 40 degree for all lasing modes.
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