Information encoding using two-level generation in a quantum dot laser

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