The optical field of the large-area binary blazed grating coupler bonded with the LED is shown in Figure 8.
Under the condition of a different incident angle, the large-area binary blazed grating was simulated at a 1550 nm wave.
Of the elements in the blazed grating coupler, grating etching depth has great influence on the coupling efficiency.
In this work, a large-area binary blazed grating coupler between the InP-based C-band LED and SOI waveguide was designed.
Jia et al., "High-performance and compact binary blazed grating coupler based on an asymmetric subgrating structure and vertical coupling," Optics Letters, vol.
Zhou et al., "High efficient subwavelength binary blazed grating beam splitter via vertical coupling," IEEE Photonics Technology Letters, vol.
Zhou, "Polarization beam splitter using a binary blazed grating coupler," Optics Letters, vol.