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Optical bistability in asymmetric Fabry-Perot laser-diode amplifiers
Optics Letters
|October 16, 2009
Summary
This study explores optical bistability in Fabry-Perot laser-diode amplifiers with asymmetric reflectivity. Researchers observed transitions in light input-output hysteresis by adjusting device bias or light phase.
Area of Science:
- Optics and Photonics
- Semiconductor Devices
Background:
- Optical bistability is a phenomenon where optical systems exhibit multiple stable states.
- Fabry-Perot laser-diode amplifiers are key components in optical communication systems.
Purpose of the Study:
- To investigate optical bistability in Fabry-Perot laser-diode amplifiers with asymmetric facet reflectivities.
- To analyze the hysteresis behavior of these devices when operated in reflection.
Main Methods:
- Experimental study of Fabry-Perot laser-diode amplifiers with asymmetric facet reflectivities.
- Analysis of light input-light output characteristics under varying device bias and incident light phase detuning.
Main Results:
- Observed a transition from counterclockwise to clockwise hysteresis.
- Demonstrated an X-shaped or butterfly hysteresis loop during the transition.
- Showcased that bias or phase detuning can control hysteresis behavior.
Conclusions:
- Asymmetric facet reflectivities enable novel optical bistability characteristics in Fabry-Perot laser-diode amplifiers.
- The observed hysteresis transitions are controllable via device bias and phase detuning.
- Experimental results align well with theoretical calculations.
