Suppression of Time Delay Signature in Chaotic Semiconductor Lasers with Filtered Optical Feedback

Figure 5

Time series (a1)–(a4), ACF curves (b1)–(b4), and DMI curves (c1)–(c4) for the different frequency detuning, where Δ𝜈=−12 GHz (first row), Δ𝜈=−2 GHz (second row), Δ𝜈=8 GHz, (third row), and Δ𝜈=14 GHz (fourth row) keeping time delay 𝜏=5 ns, width Λ=17 GHz, and 𝜅=15%.

(a)

(b)

(c)

(d)