Figure 14
From: Combinatorial logic devices based on a multi-path active ring circuit
Schematics of a 5 × 5 matrix. The signal can propagate on horizontal, vertical, and diagonal waveguides connected to the nearest-neighbor sites. Each cite includes a delay line, frequency filter, and power detector. There are five inputs and five outputs on the two sides of the matrix. Each port has a switch to control connectivity. There is one amplifier. There are 562 paths connecting input port 1 and output port 5. The green circles depict the superposition of three selected paths. There are \({2}^{25}\) possible outputs of the power sensor. All of them can be recognized.
