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Dependence of the fiber-to-fiber single-pass gain at on the output power vs the injection current in a 2 mm long InAs/InP QDash SOA.
FWM efficiency of the conjugate and FWM signals vs the pump and probe frequency detuning for a 240 mA current for a positive detuning . Inset: output spectrum of the QDash SOA for a 15 GHz detuning.
Oscilloscope time traces of a modulated pump beam when the current is changed from 190 to 240 mA (a) at 250 MHz and (b) at 2 GHz. The SOA input power is .
Optical phase shift vs modulation frequency measured with a network analyzer when the current increases from 200 to 230 mA .
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