Recent progress in coherent lightwave neural systems

Recent progress in the coherent lightwave neural nets works is presented. The complex-valued neural network constructs a signal-phase-sensitive information space When we incorporate a carrier frequency in the complex-valued network, the network (coherent network) is sensitive also to the carrier frequency. The utilization of the carrier-frequency domain promises a vast and dense neural parallelism. We concentrate on the recent efforts and experimental results to realize a carrier-frequency-controllable behavior of the complex-valued neural networks.