O-band SiPh 2x2x2λ Polarization Diversity Optical Switch with PDL ≤0.5dB. - Xiangwei Kong; Evan D. Chansky; Xinhong Du; Aaron Wissing; Rittik Mitra; Samuel Fuchs; Mohamed Elfouly; Larry A. Coldren; Adel A. M. Saleh; Clint L. Schow (OFC, 2026)