  Many channel arbitrary pulse sequence generation is required for the
electro-optic reconfiguration of optical waveguide networks in Lithium Niobate.
Here we describe a scalable solution to the requirement for mid-power bipolar
parallel outputs, based on pulse patterns generated by an externally clocked
field programmable gate array (FPGA). Positive and negative pulses can be
generated at repetition rates from up to 80~MHz with pulse width adjustable in
increments of 1.6~ns across nine independent outputs. Each channel can provide
1.5W of RF power and it can be synchronised with the operation of other
components in an optical network such as light sources and detectors through an
external clock with adjustable delay.
