Regensburg 2019 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 35: HL Poster II

HL 35.65: Poster

Wednesday, April 3, 2019, 17:30–20:00, Poster E

Synchronization of two mutually optically injected passively mode-locked quantum dot lasers — •Christoph Weber¹, Dominik Auth¹, Iraklis Hercules Simos², Christos Simos³, and Stefan Breuer¹ — ¹Institute of Applied Physics, Technische Universität Darmstadt, Schlossgartenstraße 7, 64289 Darmstadt, Germany — ²Department of Electrical and Electronics Engineering, University of West Attica, Athens, Greece — ³Department of Electronic Engineering, Technological Educational Institute of Sterea Ellada, 35100 Lamia, Greece

All-optical mutual injection is proposed to be a new technique for synchronization of two or more mode-locked semiconductor lasers with applications for example in novel secure communication schemes or optical clock synchronization, as initially theoretically predicted in [Simos et al., IEEE J.Quantum Electron. 54 (2018), 2001106]. In this contribution, two passively mode-locked quantum dot semiconductor lasers emitting at 1250 nm are mutually injected by a free-space all-optical experimental configuration. Pulse train repetition rate and laser emission wavelength synchronization are experimentally demonstrated across a broad operating regime. Emission dynamics are analysed as a function of optical delay time and laser biasing conditions. A broad synchronization regime spanning 150 mA is reported. Simulations are in good agreement with the experimental results.