Abstract
Summary form only given.To implement wavelength-division multiplexing (WDM) at a local interconnect level requires a simple means for achieving multiple wavelength vertical-cavity surface-emitting laser (VCSEL) arrays with a wide wavelength grading range. We show that by using a selectively oxidized upper DBR mirror to reduce the optical mirror loss and the loss dispersion, cw lasing has been achieved at room temperature over a 57-nm wavelength span, with relatively uniform lasing thresholds and device characteristics.
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