[1] Univ Valencia, Dept Fis Aplicada & Electromagnetismo ICMUV, E-46100 Valencia, Spain
[2] Shanghai Tech Univ, Univ Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China
[3] Univ Valencia, ICMOL, C Catedrat Jose Beltran 2, Paterna 46980, Spain