High-speed all-optical modulation using an InGaAs/AlAsSb quantum well waveguide

This is the authors' abstract. We don't add key points for this paper.

All-optical cross-phase modulation through the intersubband transition in an InGaAs/AlAsSb coupled quantum well was examined by using a sinusoidal intensity-modulated pump. For probe waves in the wavelength range of 1330-1620 nm and a pump modulation at a repetition rate of 76 GHz, cross-phase modulation (XPM) occurred with an efficiency eta, of 0.653-0.142 rad/W. Based on the efficiency we derived a transfer function for the intersubband transition (ISBT) modulator that can be conveniently used in simulating the characteristics of the modulated output (probe) for long excitation pulses with arbitrary waveforms.