  We propose a novel Conditional Variational Autoencoder (CVAE) model, enhanced
with adversarial censoring and active learning, for the generation of 550 nm
broad bandwidth (1250 nm to 1800 nm) power splitters with arbitrary splitting
ratio. The device footprint is 2.25 x 2.25 {\mu} m2 with a 20 x 20 etched hole
combination. It is the first demonstration to apply the CVAE model and the
adversarial censoring for the photonics problems. We confirm that the optimized
device has an overall performance close to 90% across all bandwidths from 1250
nm to 1800 nm. To the best of our knowledge, this is the smallest broadband
power splitter with arbitrary ratio.
