Wannier-function expansion of localized modes in 1D photonic crystals without inversion symmetry

Autor(es)

Tanaue, Helena B. ^[1] ; Bruno-Alfons, Alexys ^[2]

Afiliação do(s) autor(es)

^[1] UNESP Sao Paulo State Univ, Sch Engn, Elect Engn, BR-17033360 Bauru, SP - Brazil

^[2] UNESP Sao Paulo State Univ, Sch Sci, Dept Math, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS; v. 37, n. 12, p. 3698-3706, DEC 1 2020.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 18/11550-5 - Investigação teórica de modos eletromagnéticos localizados em cristais fotônicos unidimensionais sem simetria de inversão
• Beneficiário: Helena Borlina Tanaue
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica