Limits to modulation rates of electroabsorption modulators
2004 (English)In: IEEE Journal of Quantum Electronics, ISSN 0018-9197, Vol. 40, no 4, 400-405 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2004. Vol. 40, no 4, 400-405 p.
adiabatic approximation, electroabsorption, intersubband transitions, optical modulation, two-level system, UHF modulation, mu-m, intersubband transitions, quantum wells, dynamics
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-23302DOI: 10.1109/jqe.2004.825209ISI: 000220656800011ScopusID: 2-s2.0-1942521070OAI: oai:DiVA.org:kth-23302DiVA: diva2:342000
QC 20100525 QC 201110282010-08-102010-08-102012-03-20Bibliographically approved