Ultrafast intersubband optical switches in II#x2013;VI-based quantum-well waveguide with separate confinement heterostructure

摘要

Sub-picosecond all-optical switching at telecommunication wavelengths has been demonstrated by utilizing an intersubband transition of II–VI-based MQW fabricated in high-mesa waveguide devices with separate confinement heterostructure, where (CdS/ZnSe)/BeMgTe QW is employed as active layer.