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Ultrashort pulse self-switching in coupled-semiconductor traveling-wave amplifiers

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4 Author(s)
Trillo, S. ; Fondazione Ugo Bordoni, Rome, Italy ; Wabnitz, S. ; Soto, J.M.C. ; Wright, E.M.

A study is made of the self-switching of picosecond pulses using an active nonlinear directional coupler formed by two semiconductor laser amplifiers. Self-phase modulation associated with gain saturation permits all-optical control of output pulses emerging from the amplifiers, but switching from the cross state to the bar state is limited to 50% of the output energy. The amplified output pulses may be switched with little temporal distortion while considerable red shift in the output pulse spectra may occur

Published in:

Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 3 )