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We report the theoretical and experimental study of graphene induced silicon waveguide dispersion changes. The bandwidth of focusing apodized grating may be increased due to the decrease of waveguide dispersion.
We represent the polarization dependent loss of graphene placed directly onto silicon waveguides. Graphene introduces 7.7 dB higher losses for TM mode in a 150 µm long waveguide, which is sufficient for an integrated polarizer.
We describe a platform for mid-infrared silicon photonic devices based on focusing subwavelength grating coupler (SWG) and suspended membrane waveguides. The focusing SWG was designed for 2.75 μm wavelength. 24.7% coupling efficiency was measured. The suspended membrane waveguide was optimized in terms of holes size and etch depth.
A novel type of GaN substrate for light emitting devices with a highly polarized output using metal-dielectric composite subwavelength grating structure is proposed. Characteristics of both optical transmission and polarization extinction ratio of the polarized GaN-based LED with a double-layer grating structures are investigated. It is found that both TM transmission (TTM) and the extinction ratio(ER)...
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