A polarization selective beam splitter based on a subwavelength multisubpart profile grating structure

Y. Xiao, L. Huang, H. Wu, X. Sun, W. Xiao, J. Duan
In this study, a polarization selective beam splitter constructed by only a single layer subwavelength multisubpart profile grating is presented. Rigorous coupled-wave analysis is adopted to investigate the properties of the structure. It is shown that for a transverse electric polarized wave, the device demonstrates very high reflectivity (> 97%) from 1.46 to 1.58 μm; and for a transverse magnetic polarized wave, at the wavelength of 1.55 μm, it exhibits about 50/50 beam ratio under normal
more » ... dence. To evaluate the response of the polarizing beam splitters under variation in structure parameters, we also investigated the fabrication tolerances of the device.
doi:10.5277/oa160413 fatcat:ldblgze76belzpkb3kp5f33tuy