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We demonstrate a compact, single-etched sub-wavelength grating coupler for the O-band application, which has a measured insertion loss of −4 dB, a 3-dB bandwidth of 39 nm, back reflections below −20 dB, and a design footprint of 20um × 40um.
We demonstrate a broadband sub-wavelength grating coupler for the O-band application, which has a simulated coupling efficiency of −3.3 dB with 3-dB bandwidth of 78 nm and a measured coupling efficiency of −4.5 dB with a 3-dB bandwidth of 65 nm for fundamental TE mode.
We have designed and fabricated a bidirectional vertical grating coupler, with a simulated coupling efficiency of −2.1dB and 3-dB bandwidth of 112nm, and a measured coupling efficiency of −3.9dB and 3-dB bandwidth of 104nm.
Polarization beamsplitters (PBSs) and polarization rotators (PRs) are essential components for polarization control in silicon photonic integrated circuits. Here, we review our recent work on both component and circuit designs for polarization control.
We experimentally demonstrate compact broadband directional couplers using subwavelength gratings for silicon-on-insulator wafers with silicon layers of 220 nm. The dispersion properties of the optical modes are engineered using subwavelength gratings, which allow broadband operation. Finite-difference time-domain (FDTD)-based band structure calculations, with significantly reduced simulation time,...
The paper explores methods for decoupled linear parameter varying (LPV) control. The proposed approach seeks to benefit the multi-variable control of multi-input multi-output (MIMO) systems with variable operating conditions, variable parameters or nonlinear behavior. The method can improve the performance and reduce the variability of such MIMO systems with significant coupling in the system dynamics...
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