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Effect of Optical Feedback on the Wavelength Tuning in DBR Lasers

 
: Happach, M.; Felipe, D. De; Friedhoff, V.N.; Irmscher, G.; Kresse, M.; Kleinert, M.; Zawadzki, C.; Brinker, W.; Mohrle, M.; Keil, N.; Hofmann, W.; Schell, M.

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Volltext ()

Journal of Lightwave Technology 38 (2020), Nr.17, S.4824-4833
ISSN: 0733-8724
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer HHI ()

Abstract
Optical feedback has an impact on the tunability of lasers. We created a model of a tunable distributed Bragg reflector (DBR) laser describing the effect of optical feedback from a constant reflector distance on the wavelength tuning. Theoretical and experimental results are in good agreement. A further discussion of the model sheds light on design rules to reduce the effect of optical feedback on the tuning behavior. We introduced a new parameter called mode loss difference (MLD) as a metric for the feedback tolerance of the tuning behavior. A large MLD indicates higher tolerance of the laser to cavity length variations.

: http://publica.fraunhofer.de/dokumente/N-615343.html