High-frequency modulation of a quantum dot microring laser at elevated temperature
Zhukov A. E.1, Moiseev E. I.1, Makhov I. S.1, Fedosov I. S.1, Zubov F. I.2, Mozharov A. M.2, Ivanov K. A.1, Nadtochiy A. M.1, Kryzhanovskaya N. V.1
1HSE University, St. Petersburg, Russia
2Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg, Russia
Email: aezhukov@hse.ru, zhukale@gmail.com
Dynamic characteristics of a microring laser with InGaAs/GaAs quantum dots were studied using small-signal high-frequency direct modulation at 55 oC. The largest modulation bandwidth was measured to be 3.7 GHz, the energy-to-data ratio was estimated as 4.2-6.4 pJ/bit. Temperature dependences of the parameters affecting the speed (K-factor, threshold current, modulation current efficiency factor) were also determined. Keywords: high-frequency modulation, microlaser, quantum dots.
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