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Maximizing the temperature insensitivity, energy efficiency, and bit rate of 980-nm VCSELs via small oxide-aperture diameters and photon lifetime tuning
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Paper Abstract

Energy-efficient oxide-confined vertical-cavity surface-emitting lasers (VCSELs) emitting at 980 nm, particularly well suited for optical interconnects operating at up to 85°C are presented. The modulation bandwidth f3dB of our VCSELs increases at low currents with increasing temperature up to 23 GHz at 85°C. The impact of cavity photon lifetime and oxide-aperture diameter on the energy efficiency, temperature stability, and static and dynamic properties of our VCSELs are analyzed. Error-free 40 Gb/s operation at 85°C with an energy-to-data ratio below 100 fJ/bit and a current density close to 10 kA/cm2 is predicted based on small signal modulation experiments.

Paper Details

Date Published: 4 March 2015
PDF: 9 pages
Proc. SPIE 9381, Vertical-Cavity Surface-Emitting Lasers XIX, 93810T (4 March 2015); doi: 10.1117/12.2077771
Show Author Affiliations
Philip Moser, Technische Univ. Berlin (Germany)
Maya Volwahsen, Technische Univ. Berlin (Germany)
Gunter Larisch, Technische Univ. Berlin (Germany)
James A. Lott, Technische Univ. Berlin (Germany)
Dieter Bimberg, Technische Univ. Berlin (Germany)
King Abdulaziz Univ. (Saudi Arabia)

Published in SPIE Proceedings Vol. 9381:
Vertical-Cavity Surface-Emitting Lasers XIX
Chun Lei; Kent D. Choquette, Editor(s)

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