Abstract

We report an ultrafast cross phase modulation (XPM) effect in intersubband transition (ISBT) of InGaAsAlAsAlAsSb coupled quantum wells, where the ISBT absorption of a transverse-magnetic mode pump signal induces phase modulation of a transverse-electric mode probe signal. Using waveguide-type ISBT devices, we have achieved XPM-based 10Gbits wavelength conversion with a power penalty of 2.53dB. Also, we propose XPM-based signal processing circuits for gate switching and modulation format conversion.

© 2007 Optical Society of America

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