Dresden 2017 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 64: Poster: Photovoltaics and Optics

HL 64.41: Poster

Wednesday, March 22, 2017, 15:00–19:00, P1C

Pulse train stabilization of a passively mode-locked quantum dot laser emitting at 1250 nm subject to single and dual long fiber optical self-feedback — •Sebastian Stutz¹, Oleg Nikiforov², Christoph Weber¹, Thomas Walther², and Stefan Breuer¹ — ¹Institute of Applied Physics, Applied Semiconductor Optics and Photonics, Technische Universität Darmstadt, Schlossgartenstr. 7, 64289 Darmstadt, Germany — ²Institute of Applied Physics, Laser and Quantum Optics, Technische Universität Darmstadt, Schlossgartenstr. 7, 64289 Darmstadt, Germany

Passively mode-locked semiconductor lasers are compact photonic sources delivering a train of picosecond short optical pulses for optical clock distribution, high bit-rate optical time division multiplexing and compact microwave/millimeter-wave signal generation. The pulse train can exhibit considerable timing jitter and concepts to reduce timing and amplitude jitter are demanded. Recently the influence of dual optical feedback with fine-delay control and two short feedback cavities has been studied in Optics Express 24, 14301, 2016. Here, we study experimentally the influence of single cavity fiber feedback as well as dual cavity long fiber feedback on an InGaAs quantum dot semiconductor laser. We focus on the timing and amplitude stability as well as the pulse repetition rate control of an InGaAs quantum dot laser subject to self-feedback by long dual fiber delay cavities with fine-delay control. Simulation results by a simple time-domain model (L. Drzewietzki et al., Optics Express 21, 16142, 2013) allow to reproduce the experiments with good agreement.