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arXiv · 2010.10362

Analysis of the phase-locking dynamics of a III-V-on-silicon frequency comb laser

Alexis Verschelde·Kasper Van Gasse·Bart Kuyken·Massimo Giudici·Guillaume Huyet·Mathias Marconi
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Abstract

We present the detailed characterization of the phase dynamics of a telecom hybrid III-V-on-silicon passively mode-locked laser with a ring cavity. We explore the various regimes of operation as a function of gain current and saturable absorber bias voltage. We use a stepped-heterodyne measurement to quantify the spectral chirp and reconstruct the pulse envelop. With this technique we are able to identify regimes of near-transform-limited operation and we assess the degradation of mode-locking in the comb phase relationship when saturable absorber bias voltage is changed. Finally, we present a preliminary study of the phase-locking in hybrid mode-locked operation and demonstrate transform-limited pulses.

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Alexis Verschelde, Kasper Van Gasse, Bart Kuyken, Massimo Giudici, Guillaume Huyet, Mathias Marconi. 2020-10-20. Analysis of the phase-locking dynamics of a III-V-on-silicon frequency comb laser. https://arxiv.org/abs/2010.10362

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