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Vectorial extreme events in VCSEL polarization dynamics.
Optics Letters
|June 2, 2017
Summary
Extreme events in vertical cavity lasers are identified as vectorial or scalar, mirroring rogue wave statistics. Simultaneous dual-polarization emission increases extreme event rates compared to single-polarization.
Area of Science:
- Physics
- Optoelectronics
- Nonlinear Dynamics
Background:
- Vertical cavity surface emitting lasers (VCSELs) are crucial optoelectronic devices.
- Polarization dynamics in VCSELs with optical feedback can exhibit complex behaviors, including extreme events.
Purpose of the Study:
- To investigate and characterize extreme events (EEs) in the polarization dynamics of VCSELs with optical feedback.
- To differentiate between types of EEs and analyze their statistical properties.
Main Methods:
- Numerical simulations were employed to model the polarization dynamics of VCSELs.
- Analysis focused on identifying and classifying EEs based on polarization characteristics.
- Statistical analysis was performed to compare event generation rates.
Main Results:
- Two types of EEs were identified: vectorial (simultaneous dual-polarization high-power pulses) and scalar (single linear polarization high-power pulses).
- Both EEs exhibit statistical properties characteristic of rogue waves.
- Dual-polarization emission leads to a higher generation rate of EEs compared to single-polarization emission.
- The increased EE generation rate in dual-polarization mode saturates over a wide range of feedback strengths.
Conclusions:
- VCSEL polarization dynamics under optical feedback can generate rogue-wave-like extreme events.
- The mode of emission (single vs. dual polarization) significantly influences the rate of EE generation.
- Understanding these EEs is crucial for reliable VCSEL operation in feedback environments.
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