Regensburg 2019 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 35: HL Poster II
HL 35.67: Poster
Mittwoch, 3. April 2019, 17:30–20:00, Poster E
External optical self feedback stabilization of an InP generic foundry platform based passively mode-locked ring laser — •Dominik Auth1, Mu-Chieh Lo2, Christoph Weber1, Patrick Fiala1, Pascal Sauer1, Guillermo Carpintero2, and Stefan Breuer1 — 1Institute of Applied Physics, Technische Universität Darmstadt, Schlossgartenstraße 7, 64289 Darmstadt, Germany — 2Departamento de Tecnología Electrónica, Universidad Carlos III de Madrid, Av de la Universidad, 30, 28911 Leganés, Madrid, Spain
Passively mode-locked semiconductor ring lasers in photonic integrated circuits (PIC) platforms are promising compact sources for generating ultrashort optical pulse trains for telecommunication applications at 1550 nm. To allow for a dynamic mode spacing or pulse train repetition rate control, in this contribution, the impact of optical self feedback on a PIC ring laser is demonstrated experimentally. A stochastic time-domain model [Drzewietzki et al., Opt. Expr. 21 (2013), 16142] is applied to confirm the repetition rate tuning trends and pulse timing jitter reduction. A considerable improvement of the pulse train stability is reported. Thereby, the impact of the optical feedback strength and the macroscopic and microscopic optical feedback length on the stability of the emitted pulse train is studied experimentally and by modelling.