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We present a dispersion-engineered Ge-on-Si waveguide with flat and low dispersion from 3 to 11 μm, which enables coherent supercontinuum generation from 3700 to 9240 nm using a sub-picosecond pulsed pump.
By changing the symmetry of a photonic crystal (PC) with a rectangular lattice to straighten one of the isofrequency contours, the PC shows an all-angle quasi-self-collimation (quasi-SC) effect. To investigate the straightness of the isofrequency contour and the quasi-SC effect, we propose a straightness factor $L$ based on the method of least squares. With $L\leq L_{0}$ ( $L_{0} =0.01$ is the...
We experimentally demonstrate an efficient coupler between a silicon waveguide and a hybrid plasmonic waveguide for the wavelength range 1460-1540 nm. Such compact, efficient plasmonic couplers provide a promising platform for integrated photonic circuits.
We propose a prototype of a silicon-chip-based frequency quadrupling system integrating a single-drive silicon Mach-Zehnder modulator and a microring resonator. A proof-of-concept demonstration of 40-GHz millimeter-wave signal generation using 10-GHz driving signal is experimentally provided.
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