First Integrated Combiner Based on Self-Switching in Quantum Dots

Technische Universiteit Eindhoven, Eindhoven, North Brabant, Netherlands
IEEE Photonics Technology Letters (Impact Factor: 2.11). 11/2004; 16(10):2308 - 2310. DOI: 10.1109/LPT.2004.833952
Source: IEEE Xplore


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.

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Available from: P.J. van Veldhoven, May 16, 2013