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An evanescently coupled InGaAsP–Si hybrid laser with a buried ridge stripe (BRS) structure based on a selective area metal bonding method is demonstrated. There are the advantages of good optical field, high thermal performance, and improved carrier and photon confinement by adopting this BRS laser structure. The III–V waveguide with the first-order grating corrugations is fabricated by conventional...
A compact polarization beam splitter is demonstrated in SOI employing a 1×3 wedge-shaped MMI coupler and a 2×2 MMI coupler. The measured extinction ratios are higher than 12dB within a wide wavelength range covering C-band.
A nanoscale silicon optical 90° hybrid for TM polarization is realized. High performance over C-band is measured with an extinction ratio larger than 20dB, excess loss less than 1dB and phase deviation better than 5°.
A novel polarization converter and filter based on silicon multimode interference couplers (MMI) has been demonstrated. The measured transmission spectra of the proposed device for the light with arbitrary polarization exhibit a good performance.
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