Figure 5
From: All-optical routing and switching for three-dimensional photonic circuitry
Proposition of other integrated all-optical devices.
(Left column) Wavelength splitter based on the wavelength dependence of the coupling strength. (a) The blocker pulse (orange) is shifted from the upper branch to the lower branch at the curved waveguide segments. Consequently, the signal with longer wavelength (λ1) is routed into the lower branch and the signal of shorter wavelength (λ2<λ1) is routed into the upper branch since the blocker occurs on the other side in the second section of the structure. (b) The blocker pulse is launched into the opposite waveguide to reverse the situation. (Right Column) All-Optical CNOT gate. (c) The controlling blocker deflects the target signals, forcing them to remain in their respective channel. (d) The target-bits are swapped if the blocker is sent into the decoupled channel.
