Web- Skilled in designing optical silicon-on-insulator waveguide with/without subwavelength grating coupler. - Expert in fabricating optical waveguides … WebFurther analysis shows that the proposed subwavelength grating directional coupler has a fabrication tolerance of +/- 20 nm for the grating structure and that the coupling efficiencies for the two polarizations are both higher than -0.5 dB (similar to 89%), exceeding the entire C-band (1525-1570 nm) experimentally. ...

Subwavelength integrated photonics Nature

WebUsing the presented method, we design subwavelength grating couplers (SWGCs) with 1-dB bandwidths ranging from 50 to 90 nm. Our designed SWGCs have competitive coupling … WebThe 2 μm spectral range between near-infrared and mid-infrared held advantages of low transmission loss and broad gain bandwidth, which made it a promising candidate for the next window of free space laser and optical fiber communications. daiiono

On-chip generation of Bessel–Gaussian beam via concentrically ...

WebA subwavelength grating coupler with dual-hole structures is used to reduce the influence of the random fabrication variations on the grating effective refractive index. Fabrication … WebAbstract. We propose a silicon waveguide-fiber grating coupler that uses a subwavelength microstructure to achieve a continuously variable grating strength yet can be fabricated … Web8 Oct 2024 · Here, we demonstrated focusing subwavelength grating couplers at the spectral range of 2.2–2.5 μ m based on a multi-project wafer (MPW) service. A mean coupling efficiency of −7.77 dB with a standard deviation of 0.5 dB at a center wavelength of 2.36 μ m and a mean 3 dB bandwidth of 85 nm was experimentally achieved. daiichilife2021