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

Alexis Verschelde

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 use a stepped-heterodyne measurement to quantify the spectral chirp and reconstruct the pulse envelope. 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.

Related paper: https://www.osapublishing.org/osac/fulltext.cfm?uri=osac-4-1-129&id=446443