Effect of Optical Feedback on the Wavelength Tuning in DBR Lasers
- Resource Type
- Periodical
- Authors
- Happach, M.; de Felipe, D.; Friedhoff, V.N.; Irmscher, G.; Kresse, M.; Kleinert, M.; Zawadzki, C.; Brinker, W.; Mohrle, M.; Keil, N.; Hofmann, W.; Schell, M.
- Source
- Journal of Lightwave Technology J. Lightwave Technol. Lightwave Technology, Journal of. 38(17):4824-4833 Sep, 2020
- Subject
- Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Optical feedback
Laser modes
Laser feedback
Reflectivity
Laser tuning
Cavity resonators
Continuous Tuning
DBR Laser
external Cavity
Optical Feedback Interferometry
Optical Feedback
Tunable Laser
- Language
- ISSN
- 0733-8724
1558-2213
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.