Abstract
We report all-optical switching due to state-filling in quantum dots (QDs). The switching energy is as low as 6 fJ since state-filling requires only 2 electron-hole pairs per QD. The single layer of InAs/InP QDs is inserted within a InGaAsP/InP waveguide, which is processed into a Mach-Zehnder Interferometric space switch (MZI). A 1530-1570 nm probe beam is switched by optical excitation of one MZI-arm from above. By exciting below the InGaAsP bandgap, we prove that the refractive index nonlinearity is entirely due to state-filling in the QDs.
| Original language | English |
|---|---|
| Title of host publication | Proc. [CD-ROM] Photonics 2004 Cochin, India (2004) (invited presentation) |
| Place of Publication | Cochin, India |
| Pages | 1-6 |
| Publication status | Published - 2004 |
| Event | Photonics 2004, Cochin, India - Cochin, India Duration: 1 Jan 2004 → … |
Conference
| Conference | Photonics 2004, Cochin, India |
|---|---|
| Country | India |
| City | Cochin |
| Period | 1/01/04 → … |
| Other | Photonics 2004 |
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Haverkort, J. E. M., Prasanth, R., Dilna, S., Bogaart, E. W., Deepthy, A., Tol, van der, J. J. G. M., ... Wolter, J. H. (2004). Optical non-linearities in III/V quantum dots. In Proc. [CD-ROM] Photonics 2004 Cochin, India (2004) (invited presentation) (pp. 1-6). Cochin, India.