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Light-current-voltage characteristics of the VCSELs with 6 and aperture diameters. The inset shows a visible-light microscope image of an example processed VCSEL in the GSG configuration.
Magnitude of the small signal modulation response for different applied bias currents and the corresponding fits for the VCSELs with (a) and (b) oxide aperture diameters.
Parasitic cut-off (black), resonance (red), and 3 dB (green) frequencies for the VCSELs (a) and (b) apertures.
Eye diagrams for the VCSEL with aperture at different bit rates and currents in a BTB configuration with PRBS NRZ.
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