UNESP Sao Paulo State Univ, Sch Engn, Elect Engn, BR-17033360 Bauru, SP - Brazil
 UNESP Sao Paulo State Univ, Sch Sci, Dept Math, BR-17033360 Bauru, SP - Brazil
Número total de Afiliações: 2
Tipo de documento:
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS;
DEC 1 2020.
Citações Web of Science:
The localized modes of one-dimensional photonic crystals without inversion symmetry are calculated by using linear combinations of Wannier functions. A closed form is given for the phase of the Bloch function leading to maximally localized Wannier functions. The defect consists of changing the refractive index of one layer in a single unit cell. The results for the frequencies and magnetic-field profiles of the localized modes are found in good agreement with calculations based on the transfer-matrix method. The need for maximally localized Wannier functions is discussed. (C) 2020 Optical Society of America (AU)