Photonics Frequency Generator Unit (FGU)
The frequency generation unit or FGU equipment comprises the generation, amplification and distribution of photonic local oscillator signals to facilitate the RF Photonic conversion process. Below we focus on local oscillators, high power OFAs and fibre splitters. EO‐MZMs have been discussed in RPC equipment section and AWG is discussed in the optical switching equipment section.
The FGU units and the basic equipment‐level requirements are:
- A Local Oscillator laser:
The FGU equipment deploys laser arrays to provide the optical signals used for RF frequency conversion using the optical domain. In the FGU equipment, lasers will be system integrated together with their current drivers and temperature control electronics.