Fig. 4
From: A fully reconfigurable waveguide Bragg grating for programmable photonic signal processing
Schematic view of a programmable microwave signal processor. The experimental set-up consists of a tunable laser source (TLS), a polarization controller (PC), a Mach-Zehnder modulator (MZM), an erbium-doped fiber amplifier (EDFA), and a photodetector (PD)
