LaboratoryofAdvancedTechniqueandFabricationforWeak-LightNonlinearPhotonicsMaterials;
PhotonicsCentre;
InstituteofPhysics;
NankaiUniversity;
Tianjin300071;
China;
DepartmentofElectricalEngineeringandComputerScience;
SyracuseUniversitySyracuse;
NY13244;
USA;