Suppression of Timing and Energy Fluctuations in a Modelocked Semiconductor Laser by cw-Injection

  • Finn Mengel
  • Chinlon Lin
  • Niels Gade
Part of the Springer Series in Electrophysics book series (SSEP, volume 21)


Active modelocking of semiconductor lasers in an external cavity is a simple and useful technique for generation of short optical pulses in the wavelength region of interest for optical communications. Up to now, most attention has been paid to the time-averaged behaviour of pulse width, optical spectrum and time-bandwidth product, although noise, both at baseband and optical frequencies, is of major importance in communication and logic applications. In this paper, we investigate the noise behaviour of a modelocked GaAlAs laser and demonstrate a partial suppression by cw injection locking. A similar technique has previously been demonstrated with CO2 lasers [1].


Pulse Width Pulse Train External Cavity Master Laser Noise Behaviour 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • Finn Mengel
    • 1
  • Chinlon Lin
    • 2
  • Niels Gade
    • 2
  1. 1.Telecommunications Research LaboratoryCopenhagenDenmark
  2. 2.Electromagnetics InstituteTechnical University of DenmarkLyngbyDenmark

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