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arXiv · 1901.01400

Synchronization of two DFB lasers using frequency-shifted feedback for microwave photonics

Aurélien Thorette·Marco Romanelli·Marc Vallet
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Abstract

The phase synchronization of two semiconductor DFB lasers submitted to both frequency-shifted cross-injection and self-feedback is investigated, both numerically and experimentally. A dedicated setup based on monolithic DFB lasers permits to effectively lock the frequency difference of the two lasers on an external reference over a broad range of parameters. In agreement with a delayed rate equation model, it is shown that the sensitivity of the locking to the optical feedback phases is mitigated by using strong cross-injection, thus paving the way to applications for microwave photonics. Other synchronization dynamics can also be observed, such as bounded-phase oscillations.

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Aurélien Thorette, Marco Romanelli, Marc Vallet. 2019-01-05. Synchronization of two DFB lasers using frequency-shifted feedback for microwave photonics. https://doi.org/10.1109/jqe.2019.2891819

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