1. Slow and fast light in quantum dot based semiconductor optical amplifiers
- Author
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Romain Brenot, J. Landreau, Guy Aubin, Abderrahim Ramdane, Anthony Martinez, Francois Lelarge, and J.-G. Provost
- Subjects
Optical amplifier ,education.field_of_study ,Materials science ,business.industry ,Oscillation ,Population ,General Engineering ,Energy Engineering and Power Technology ,Slow light ,Four-wave mixing ,Semiconductor ,Optics ,Quantum dot ,Optoelectronics ,business ,education ,Mixing (physics) - Abstract
Recent progress in the field of quantum dot/dash based semiconductor optical amplifiers (SOAs) for slow and fast light is discussed. Room temperature fast light has been obtained in InAs/InP QDash based SOAs by means of coherent population oscillation and four wave mixing (FWM) effects. Typical optical delays amount to 55 ps at 2 GHz. Growth optimization of the QDashes allowed us to achieve high modal gain, leading to very similar performances, e.g. gain and FWM efficiency, to those of a bulk SOA. A novel approach based on linear spectrograms is also introduced to measure the phase shift induced by wave mixing in an SOA.
- Published
- 2009