Role of dispersion on zero-average-index bandgaps

We consider periodic multilayers combining ordinary positive index materials and dispersive metamaterials with negative index in some frequency ranges. These structures can exhibit photonic bandgaps which, in contrast with the usual Bragg gaps, are not based on interference mechanisms. Changing the...

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Autores principales: Silvestre, E., Depine, R.A., Martínez-Rieci, M.L., Monsoriu, J.A.
Formato: JOUR
Materias:
Dispersion (waves)
Metamaterials
Refractive index
Analytical expressions
Constitutive parameters
Dispersion models
Frequency ranges
Interference mechanisms
Negative index
Periodic multilayers
Positive index materials
Energy gap
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07403224_v26_n4_p581_Silvestre
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_07403224_v26_n4_p581_Silvestre
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spelling todo:paper_07403224_v26_n4_p581_Silvestre2023-10-03T15:38:12Z Role of dispersion on zero-average-index bandgaps Silvestre, E. Depine, R.A. Martínez-Rieci, M.L. Monsoriu, J.A. Dispersion (waves) Metamaterials Refractive index Analytical expressions Constitutive parameters Dispersion models Frequency ranges Interference mechanisms Negative index Periodic multilayers Positive index materials Energy gap We consider periodic multilayers combining ordinary positive index materials and dispersive metamaterials with negative index in some frequency ranges. These structures can exhibit photonic bandgaps which, in contrast with the usual Bragg gaps, are not based on interference mechanisms. Changing the dispersion models for the constituent metamaterial, we investigate its role in the production of zero-average-index bandgaps. In particular, we show the effect of each constitutive parameter on both bandgap edges. Finally, we give some approximated analytical expressions in terms of average parameters for the determination of the upper and lower limits of the zero-average refractive-index bandgap. © 2009 Optical Society of America. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07403224_v26_n4_p581_Silvestre
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Dispersion (waves)
Metamaterials
Refractive index
Analytical expressions
Constitutive parameters
Dispersion models
Frequency ranges
Interference mechanisms
Negative index
Periodic multilayers
Positive index materials
Energy gap
spellingShingle Dispersion (waves)
Metamaterials
Refractive index
Analytical expressions
Constitutive parameters
Dispersion models
Frequency ranges
Interference mechanisms
Negative index
Periodic multilayers
Positive index materials
Energy gap
Silvestre, E.
Depine, R.A.
Martínez-Rieci, M.L.
Monsoriu, J.A.
Role of dispersion on zero-average-index bandgaps
topic_facet Dispersion (waves)
Metamaterials
Refractive index
Analytical expressions
Constitutive parameters
Dispersion models
Frequency ranges
Interference mechanisms
Negative index
Periodic multilayers
Positive index materials
Energy gap
description We consider periodic multilayers combining ordinary positive index materials and dispersive metamaterials with negative index in some frequency ranges. These structures can exhibit photonic bandgaps which, in contrast with the usual Bragg gaps, are not based on interference mechanisms. Changing the dispersion models for the constituent metamaterial, we investigate its role in the production of zero-average-index bandgaps. In particular, we show the effect of each constitutive parameter on both bandgap edges. Finally, we give some approximated analytical expressions in terms of average parameters for the determination of the upper and lower limits of the zero-average refractive-index bandgap. © 2009 Optical Society of America.
format JOUR
author Silvestre, E.
Depine, R.A.
Martínez-Rieci, M.L.
Monsoriu, J.A.
author_facet Silvestre, E.
Depine, R.A.
Martínez-Rieci, M.L.
Monsoriu, J.A.
author_sort Silvestre, E.
title Role of dispersion on zero-average-index bandgaps
title_short Role of dispersion on zero-average-index bandgaps
title_full Role of dispersion on zero-average-index bandgaps
title_fullStr Role of dispersion on zero-average-index bandgaps
title_full_unstemmed Role of dispersion on zero-average-index bandgaps
title_sort role of dispersion on zero-average-index bandgaps
url http://hdl.handle.net/20.500.12110/paper_07403224_v26_n4_p581_Silvestre
work_keys_str_mv AT silvestree roleofdispersiononzeroaverageindexbandgaps
AT depinera roleofdispersiononzeroaverageindexbandgaps
AT martinezrieciml roleofdispersiononzeroaverageindexbandgaps
AT monsoriuja roleofdispersiononzeroaverageindexbandgaps
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