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Injection-induced polarization switching of a modulated-1.5 μm wavelength single-mode VCSEL

This paper represents, the first report of experimental observations of the polarization switching dynamics of a modulated 1.5-μm wavelength single-mode vertical cavity surface emitting laser (VCSEL) under optical injection control. An injected optical beam with polarization orthogonal to that of the stand-alone VCSEL caused a dynamical instability of the laser polarization state near threshold. Successful switching of the polarization state of the output of the VCSEL modulated at 5 MHz was achieved.