In this review, we summarize and discuss our recent studies of subwavelength grating (SWG) structures for engineering the refractive index of silicon microphotonic waveguides …
As most integrated optics platforms, silicon offers only a fixed set of material refractive indices for designing devices. The ability of sub-wavelength patterned structures to …
We propose and experimentally demonstrate a novel subwavelength grating coupler on silicon-on-insulator, for coupling to optical fibers with a wide optical bandwidth. Theoretical …
Y Zhang, S Yang, AEJ Lim, GQ Lo… - IEEE Photonics …, 2013 - ieeexplore.ieee.org
We demonstrated a waveguide crossing for submicron silicon waveguides with average insertion loss of 0.18±0.03 dB and crosstalk of-41±2 dB, uniform across an 8-inch wafer. The …
H Chen, AW Poon - IEEE photonics technology letters, 2006 - ieeexplore.ieee.org
We report multimode-interference (MMI)-based crossings in high-index-contrast silicon wire waveguides. Our experiments show an MMI crossing of~ 0.4-dB insertion loss, which …
P Cheben, DX Xu, S Janz, A Densmore - Optics express, 2006 - opg.optica.org
We propose a new method for mode conversion and coupling between an optical fiber and a sub-micrometer waveguide using a subwavelength grating (SWG) with a period less than …
D Taillaert, P Bienstman, R Baets - Optics letters, 2004 - opg.optica.org
We have designed a high-efficiency broadband grating coupler for coupling between silicon- on-insulator (SOI) waveguides and optical fibers. The grating is only 13 µm long and 12 µm …
We propose a silicon waveguide-fiber grating coupler that uses a subwavelength microstructure to achieve a continuously variable grating strength yet can be fabricated …
Grating couplers are an efficient means for fiber to chip coupling, as they require no facet preparation and enable wafer scale testing. While grating couplers are commonly used in …