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

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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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