A near-transparent 90 degrees polarization rotator with an array of L-shaped holes inside a glass cube

摘要

We report a near-transparent 90 degrees polarization rotator by using a single-layer microstructure. The co-polarization light has been suppressed by using destructive interference. At the same time, the transmission of cross-polarization light has been improved with inference effect between surface plasmon polaritons (SPPs) and localized surface plasmons (LSPs). This efficient polarization rotation mechanism may be very useful in designing polarization rotators.