Feedback Sensitivity of Detuned DBR Semiconductor Lasers
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TRONCIU, Vasile, WERNER, Nils, WENZEL, Hans, WUNSCHE, Hans Jurgen. Feedback Sensitivity of Detuned DBR Semiconductor Lasers. In: IEEE Journal of Quantum Electronics, 2021, nr. 5(57), p. 0. ISSN 0018-9197. DOI: https://doi.org/10.1109/JQE.2021.3101216
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IEEE Journal of Quantum Electronics
Numărul 5(57) / 2021 / ISSN 0018-9197

Feedback Sensitivity of Detuned DBR Semiconductor Lasers

DOI: https://doi.org/10.1109/JQE.2021.3101216

Pag. 0-0

Tronciu Vasile1, Werner Nils2, Wenzel Hans2, Wunsche Hans Jurgen2
 
1 Technical University of Moldova,
2 Leibniz-Insitut für Höchstfrequenztechnik, Berlin
 
Disponibil în IBN: 21 august 2021


Rezumat

A distributed Bragg reflector (DBR) laser represents a simple realization of a semiconductor laser operating in a single longitudinal mode. We present a so far missing theoretical study how its reflection tolerance depends on the detuning between lasing wavelength and maximum of the DBR reflectivity. The generic Lang-Kobayashi equations for lasers subject to optical feedback are extended to include the detuning parameter on base of the round-trip condition for stationary states. As a consequence, a well established formula for estimating the feedback tolerance is modified for detuned DBR lasers, too. Bifurcation analysis of the Lang-Kobayashi equations confirms the modified formula. Properly adapting the parameters of the DBR, the calculations yield a possible tolerance of the simple DBR laser against nearly 100 % feedback. 

Cuvinte-cheie
Distributed Bragg reflector, external feedback, Lang-Kobayashi equations, laser, stability