E. Strzelecka, T. Wipiejewski, J. Ko, B. Thibeault, L. Coldren
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Multiple-wavelength MBE-regrown vertical-cavity laser arrays integrated with refractive microlenses for optical interconnections
An array of 7 multiple-wavelength MBE-regrown InGaAs QW VCSELs with 15 nm span and 30 /spl mu/m pitch is monolithically integrated with a refractive GaAs microlens on the back surface. The lens collimates individual beams to a divergence half angle <1.5/spl deg/ and separates them by /spl sim/5.