Timing characterization of 100 GHz passively mode-locked discrete mode laser diodes
Abstract
We report on the characterization of the timing stability of passively mode-locked discrete mode diode laser sources. These are edge-emitting devices with a spatially varying refractive index profile for spectral filtering. Two devices with a mode-locking frequency of 100 GHz are characterized. The first device is designed to support a comb of six modes and generates near Fourier limited 1.9 ps pulses. The second supports four primary modes resulting in a sinusoidal modulation of the optical intensity. Using a cross-correlation technique, we measured a 20 fs pulse to pulse timing jitter for the first device, while, for the second device, a mode-beating (RF) linewidth of 1 MHz was measured using heterodyne mixing in a semiconductor optical amplifier. Comparison of these results with those obtained for an equivalent Fabry-Perot laser indicates that the spectral filtering mechanism employed does not adversely affect the timing properties of these passively mode-locked devices.
Keywords
Cite
@article{arxiv.1112.5024,
title = {Timing characterization of 100 GHz passively mode-locked discrete mode laser diodes},
author = {David Bitauld and Simon Osborne and Stephen O'Brien},
journal= {arXiv preprint arXiv:1112.5024},
year = {2015}
}