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Limits to modulation rates of electroabsorption modulators
KTH, Tidigare Institutioner, Mikroelektronik och informationsteknik, IMIT.
KTH, Tidigare Institutioner, Mikroelektronik och informationsteknik, IMIT.
KTH, Tidigare Institutioner, Mikroelektronik och informationsteknik, IMIT.
2004 (engelsk)Inngår i: IEEE Journal of Quantum Electronics, ISSN 0018-9197, E-ISSN 1558-1713, Vol. 40, nr 4, s. 400-405Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We analyze the speed limitations of optical electroabsorption modulators. We argue that modulation rate limits are closely related to quantum mechanical adiabaticity. By analyzing the breakdown of the adiabatic approximation, analytical expressions for modulation limits are found. These expressions are numerically validated. Furthermore, we discuss the constraints on the allowable modulation rate set by losses from the quantum well and transition linewidth.

sted, utgiver, år, opplag, sider
2004. Vol. 40, nr 4, s. 400-405
Emneord [en]
adiabatic approximation, electroabsorption, intersubband transitions, optical modulation, two-level system, UHF modulation, mu-m, intersubband transitions, quantum wells, dynamics
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Identifikatorer
URN: urn:nbn:se:kth:diva-23302DOI: 10.1109/jqe.2004.825209ISI: 000220656800011Scopus ID: 2-s2.0-1942521070OAI: oai:DiVA.org:kth-23302DiVA, id: diva2:342000
Merknad
QC 20100525 QC 20111028Tilgjengelig fra: 2010-08-10 Laget: 2010-08-10 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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