Synchronization of two DFB lasers using frequency-shifted feedback for microwave photonics
Optics
2019-03-27 v1 Applied Physics
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.
Cite
@article{arxiv.1901.01400,
title = {Synchronization of two DFB lasers using frequency-shifted feedback for microwave photonics},
author = {Aurélien Thorette and Marco Romanelli and Marc Vallet},
journal= {arXiv preprint arXiv:1901.01400},
year = {2019}
}