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Opt Lett. 2011 Jul 1;36(13):2521-3. doi: 10.1364/OL.36.002521.

Impact of bias current distribution on the noise figure and power saturation of a multicontact semiconductor optical amplifier.

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School of Physics, Trinity College Dublin, Dublin 2, Ireland.


We present an experimental investigation of a multicontact semiconductor optical amplifier. This first-generation device allows for direct control of the carrier density profile along the length of the waveguide. This is used to control the device noise figure, with a minimum value of 5 dB observed at a gain of 15 dB for an optimum carrier density profile. The opposite carrier density profile results in an increase of the power saturation by 3 dB.

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