Ultra high-speed electro-optically modulated VCSELs: modeling and experimental results

V. A. Shchukin; N. N. Ledentsov; J. A. Lott; H. Quast; F. Hopfer; L. Ya. Karachinsky; M. Kuntz; P. Moser; A. Mutig; A. Strittmatter; V. P. Kalosha; D. Bimberg

doi:10.1117/12.784371

22 February 2008 Ultra high-speed electro-optically modulated VCSELs: modeling and experimental results

V. A. Shchukin, N. N. Ledentsov, J. A. Lott, H. Quast, F. Hopfer, L. Ya. Karachinsky, M. Kuntz, P. Moser, A. Mutig, A. Strittmatter, V. P. Kalosha, D. Bimberg

Author Affiliations +

Proceedings Volume 6889, Physics and Simulation of Optoelectronic Devices XVI; 68890H (2008) https://doi.org/10.1117/12.784371
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

We have studied the modulation properties of a vertical cavity surface-emitting laser (VCSEL) coupled to an electrooptical modulator. It is shown that, if the modulator is placed in a resonant cavity, the modulation of the light output power is governed predominantly by electrooptic, or electrorefraction effect rather than by electroabsorption. A novel concept of electrooptically modulated (EOM) VCSEL based on the stopband edge-tunable distributed Bragg reflector (DBR) is proposed which allows overcoming the limitations of the first-generation EOM VCSEL based on resonantly coupled cavities. A new class of electrooptic (EO) media is proposed based on type-II heterostructures, in which the exciton oscillator strength increases from a zero or a small value at zero bias to a large value at an applied bias. A EOM VCSEL based on a stopband-edge tunable DBR including a type-II EO medium is to show the most temperature-robust operation. Modeling of a high-frequency response of a VCSEL light output against large signal modulation of the mirror transmittance has demonstrated the feasibility to reach 40 Gb/s operation at low bit error rate. EOM VCSEL showing 60 GHz electrical and ~35 GHz optical (limited by the photodetector response) bandwidths is realized.

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V. A. Shchukin, N. N. Ledentsov, J. A. Lott, H. Quast, F. Hopfer, L. Ya. Karachinsky, M. Kuntz, P. Moser, A. Mutig, A. Strittmatter, V. P. Kalosha, and D. Bimberg "Ultra high-speed electro-optically modulated VCSELs: modeling and experimental results", Proc. SPIE 6889, Physics and Simulation of Optoelectronic Devices XVI, 68890H (22 February 2008); https://doi.org/10.1117/12.784371

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