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Published on: September 5, 2019
Polarization synchronization in unidirectionally coupled vertical-cavity surface-emitting lasers with orthogonal
M Sciamanna1, I Gatare, A Locquet
1Supélec, LMOPS CNRS UMR-7132, Unité de Recherche Commune Supélec et Université de Metz, Rue Edouard Belin 2, F-57070 Metz, France. marc.sciamanna@supelec.fr
Summary
We theoretically analyzed polarization dynamics in coupled vertical-cavity surface-emitting lasers (VCSELs). Orthogonal optical injection can switch the slave VCSEL
Area of Science:
- Optics and Photonics
- Laser Physics
- Nonlinear Dynamics
Background:
- Vertical-cavity surface-emitting lasers (VCSELs) are crucial optoelectronic devices with applications in optical communications and sensing.
- Understanding polarization dynamics in coupled VCSEL systems is essential for controlling laser output and preventing unwanted polarization switching.
- Isotropic optical feedback and orthogonal optical injection are key parameters influencing VCSEL behavior.
Purpose of the Study:
- To theoretically investigate the polarization dynamics of unidirectionally coupled VCSELs under specific feedback and injection conditions.
- To explore the phenomenon of polarization switching in the slave VCSEL due to orthogonal optical injection from a master VCSEL.
- To identify and characterize regions of enhanced synchronization between the injected and slave laser modes.
Main Methods:
- Theoretical analysis of polarization dynamics in a master-slave VCSEL configuration.
- Modeling of isotropic optical feedback on the master VCSEL.
- Modeling of orthogonal optical injection from the master to the slave VCSEL.
Main Results:
- The slave VCSEL's polarization can switch to match the master laser's field under orthogonal injection.
- The required injection power for polarization switching is dependent on frequency detuning.
- Two distinct regions of enhanced synchronization are identified, exhibiting different dynamics in polarization modes and total intensity.
Conclusions:
- Orthogonal optical injection is an effective method for controlling slave VCSEL polarization.
- The synchronization quality is sensitive to parameter mismatch and individual VCSEL switching properties.
- The identified synchronization regions offer insights into advanced laser control and potential applications.
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