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

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Autor(es):	Tanaue, Helena B. ^[1] ; Bruno-Alfons, Alexys ^[2] Número total de Autores: 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 Número total de Afiliações: 2
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