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[38652] Artykuł:

Numerical Analysis of Impact of DBRs' Outermost Layers on Optical Characteristics of a Surface-Normal Electro-Absorption Modulator by the Method of Single Expression

Czasopismo: Proceedings of 11th International Conference on Transparent Optical Networks ICTON 2009, Ponta Delgada, Azores, Portugal, June 28 – July 2, 2009   Strony: 695-698
ISBN:  978-1-4244-4826-5
Wydawca:  IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Opublikowano: 2009
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału		 Liczba
punktów
H.V. Baghdasaryan20.00  
T.M. Knyazyan20.00  
A.S. Berberyan20.00  
T.T. Hovhannisyan20.00  
Marian MarciniakInstytut Łączności - Państwowy Instytut Badawczy20.00  

Grupa MNiSW:  Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science)
Punkty MNiSW: 0
Klasyfikacja Web of Science: Proceedings Paper

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Keywords:

surface-normal electro-absorption modulator  optical model  method of single expression  numerical modelling 


Abstract:

An optical model of a surface-normal electro-absorption (EA) modulator consisting of multiple-quantum wells (MQWs) embedded in an asymmetric Fabry-Perot (FP) cavity formed by high-reflective back DBR and moderate-reflective top DBR separated from MQWs at both sides by buffer layers is analysed numerically by the method of single expression (MSE). Reflectance of the modulator versus normalised thickness of the buffer layer is analysed for different alternation of quarter-wavelength layers of DBRs. Corresponding optical field patterns, distributions of power flow density and permittivity profiles along the modulator structures with different alternation of DBR layers are presented for low reflection state. The contrast of EA modulator with DBRs of high permittivity layers outermost depending on the operating wavelength is analysed for different values of imaginary part of a permittivity of quantum-well (QW) layers. In the result of modelling corresponding design rules for optimisation of surface-normal EA modulators are suggested.


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