Abstract
We propose a new asymmetric drive scheme for vertical-cavity surface-emitting lasers (VCSELs) that is expected to permit the active compensation of misalignment between laser beam and waveguide. Simulations performed with a VCSEL integrated spatiotemporal advanced simulator simulation tool indicate that driving the laser with two orthogonal, individually addressable contacts may improve coupling efficiency by selective excitation of modes with given azimuthal distributions. Besides improved and more-stable coupling efficiency, significantly lower noise levels that result from reduced mode partition noise are observed, which significantly enhance the performance of digital transmission systems. Such electronic beam shaping from the driver side may drastically reduce the system’s costs by relaxing its fabrication tolerances.
© 2003 Optical Society of America
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