Information encoding using two-level generation in a quantum dot laser
Maximov M. V. 1, Shernyakov Yu. M. 2, Gordeev N. Yu. 2, Nadtochiy A. M. 1, Zhukov A. E. 3
1Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg, Russia
2Ioffe Institute, St. Petersburg, Russia
3HSE University, St. Petersburg, Russia
Email: maximov@beam.ioffe.ru

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We propose an approach for encoding and transmitting information based on the use of a quantum dot laser, which, depending on the injection current, emits either one of two or simultaneously two spectral components, with different wavelengths. When the laser is modulated by current, each lasing line is detected by an independent photodiode, and thus the information is encoded by both the intensity of each line and its wavelength. Keywords: quantum dot lasers, two-state lasing, multilevel signaling, wavelength- division multiplexing.
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