All-optical switching in a quantum dot switch

R. Prasanth, J.E.M. Haverkort, A. Deepthy, E.W. Bogaart, J.J.G.M. Tol, van der, E.A. Patent, G. Zhao, Q. Gong, P.J. Veldhoven, van, R. Nötzel, J.H. Wolter

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


We report all-optical switching due to state-filling in quantum dots (QDs) within a Mach- Zehnder Interferometric (MZI) switch. The MZI was fabricated using InGaAsP/InP waveguides containing a single layer of InAs/InP QDs. A 1530- 1570 nm probe beam is switched by optical excitation of one MZI-arm. By exciting below the InGaAsP bandgap, we prove that the refractive index nonlinearity is entirely due to the QDs. The switching efficiency is 5 rad/(µW absorbed power). Probe wavelength insensitivity was obtained using a broad size distribution of QDs.
Original languageEnglish
Title of host publicationproc. Semiconductor Advances for Future Electronics (SAFE) 03
Place of PublicationVeldhoven, The Netherlands
PublisherSTW Technology Foundation
ISBN (Print)90-73461-39-1
Publication statusPublished - 2003
EventSemiconductor Advances for Future Electronics (SAFE) 03 - Veldhoven, Netherlands
Duration: 25 Nov 200326 Nov 2003


ConferenceSemiconductor Advances for Future Electronics (SAFE) 03


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