Michelson interferometric methods for full optical complex convolution

Abstract

Dynamic real-time optical processing has significant potential for accelerating specific tensor algebra. Here we present the first demonstration of simultaneous amplitude and phase modulation of an optical two-dimension signal in the Fourier plane of a thin lens. Two spatial light modulators (SLMs) arranged in a Michelson interferometer modulate the amplitude and the phase while being simultaneously in the focal plane of two Fourier lenses. The lenses frame an interferometer in a 4f-system enabling full modulation in the Fourier domain of a telescope. Main sources of phase noise and losses are discussed such as native to SLMs non-linear inter-pixel crosstalk, variability in modulation efficiency as a function of projected mask parameters, and Fresnel's optics limitations. Such a system is of extreme utility in rapidly progressing fields of optical computing, hardware acceleration, encryption, and machine learning, where neglecting phase modulation can lead to impractical bit-error rates.

An efficient optical-based binary neural network hardware accelerator for harsh environments

“…Furthermore, this evolution underscores the necessity for novel methodologies in model training and optimization, to harness the potential of these colossal architectures without commensurate escalations in resource demands. [8][9][10][11][12] The trajectory of neural network development, thus, heralds a new paradigm in artificial intelligence, presenting both formidable challenges and unparalleled opportunities for innovation in the field. 13,14 However, the infrastructural foundations that underlie these AI innovations are increasingly unable to match their pace.…”