1National Research Univ. Higher School of Economics (Russian Federation) 2Alferov Univ. (Russian Federation) 3A. F. Ioffe Physical-Technical Institute (Russian Federation) 4VI Systems GmbH (Germany)
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We show that using dense arrays of InGaAs quantum well-dots enables uncooled high-frequency applications with a GHz-range bandwidth. A maximum 3-dB modulation frequency of about 6 GHz was found. The K-limited maximal frequency of 13 GHz was estimated from the modulation response analysis. The experimental values of the energy-todata reaches 1.5 pJ/bit for the smallest diameter under study (10 μm). A 23 μm in diameter microlaser exhibits open eye diagram up to 12.5 Gbit/s and is capable of error-free 10 Gbit/s data transmission at 30°C without temperature stabilization. Our results demonstrate the potential to achieve miniature high-speed on-chip light sources for optical communication applications using lasers with a diameter of only a few micrometers.
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N. V. Kryzhanovskaya, E. I. Moiseev, F. I. Zubov, M. V. Maximov, S. A. Blokhin, N. A. Kalyuzhnyy, S. A. Mintairov, M. M. Kulagina, N. Ledentsov Jr., N. Ledentsov, A. E. Zhukov, "Small-signal modulation and 10 Gb/s data transmission by microdisk lasers based on InGaAs/GaAs quantum well-dots," Proc. SPIE 11356, Semiconductor Lasers and Laser Dynamics IX, 1135608 (1 April 2020); https://doi.org/10.1117/12.2554552