Ultrashort Pulse Self-Switching in Coupled-Semiconductor Traveling-Wave Amplifiers

Stefano Trillo, Stefan Wabnitz, J. M. Soto-Crespo, E. M. Wright

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We study 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.

Original languageEnglish (US)
Pages (from-to)410-415
Number of pages6
JournalIEEE Journal of Quantum Electronics
Issue number3
StatePublished - Mar 1991

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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