High-speed 850 nm VCSELs with 28 GHz modulation bandwidth for short reach communication

By Petter Westbergh, R. Safaisini, E. Haglund, Johan S. Gustavsson, Anders Larsson, A. Joel. Photonics West - Optoelectronic Materials and Devices, 2013

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We present results from our new generation of high performance 850 nm oxide confined vertical cavity surface-emitting lasers (VCSELs). With devices optimized for high-speed operation under direct modulation, we achieve record high 3dB modulation bandwidths of 28 GHz for ~4 μm oxide aperture diameter VCSELs, and 27 GHz for devices with a ~7 μm oxide aperture diameter. Combined with a high-speed photoreceiver, the ~7 μm VCSEL enables error-free transmission at data rates up to 47 Gbit/s at room temperature, and up to 40 Gbit/s at 85°C.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/9614d2a43a3e257a71ed735d3d3ecaa34ba55bc4