Part of #Design, Simulation and optimization of Midinfrared Ultrabroadband HCG mirrors for 2.3?m VCSELs# :
Publishing year : 2014
Conference : National Electronic Conference on New Achievements in Engineering and Basic Sciences
Number of pages : 7
Abstract: We present the design of two Si / SiO2 subwavelength high contrast grating mirrors. These mirrors are optimized for integration in the mid-infrared VCSEL. We tried to optimize these structures for having an ultrabroadband mirror which has a polarization selection ability. We have proposed two structures. The first one, we optimized the structure to provide the largest bandwidth as possible for reflections above 99% and 99.9% respectively. Then, in the second one, we optimized the structure for better TE mode suppression and better stability in design parameter changes. Finally, the high order mode suppression verified and results shows a very good mode suppression for degrees above 5 and 13 for both structures respectively.