Reduced Dimensionality Multiphysics Model for Efficient VCSEL Optimization

Abstract

The ICT scene is dominated by short-range intra-datacenter interconnects and networking, requiring high speed and stable operations at high temperatures. GaAs/AlGaAs vertical-cavity surface-emitting lasers (VCSELs) emitting at 850–980 nm have arisen as the main actors in this framework. Starting from our in-house 3D fully comprehensive VCSEL solver VENUS, in this work we present the possibility of downscaling the dimensionality of the simulation, ending up with a multiphysics 1D solver (D1ANA), which is shown to be capable of reproducing the experimental data very well. D1ANA is then extensively applied to optimize high-temperature operation, by modifying cavity detuning and distributed Bragg’s reflector lengths.

Densely packed 1.1 μm band vertical cavity surface emitting laser array for co-packaged optics

“…In addition, the thermal crosstalk in a multichannel VCSEL array is an important issue for 2D dense integration. [24][25][26] The growing temperature at active region will increase the threshold current, change the emitting wavelength, 24) and influence the speed characteristic. 25,26) We will also show the thermal crosstalk evaluation.…”