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First integrated combiner based on self-switching in quantum dots

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10 Author(s)
Patent, E.A. ; Opto-Electron. Devices Group, Eindhoven Univ. of Technol., Netherlands ; van der Tol, J.J.G.M. ; Binetti, P.R.A. ; Gong, Q.
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We demonstrate all-optical switching in quantum dots (QDs). The switching is studied in an integrated optical combiner circuit. This is a Mach-Zehnder interferometer with an unequal power distribution over the branches. The refractive index is intensity dependent in the branches due to the QDs. Large all-optical nonlinearities are measured. This device is aimed to avoid an unwanted 3-dB loss, fundamental in passive optical splitters.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 10 )