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From 3D to 2D and back again
Niyazi Ulas Dinc1,2, Amirhossein Saba1, Jorge Madrid-Wolff2
1Optics Laboratory, École polytechnique fédérale de Lausanne, Lausanne, Switzerland.
Abstract:
The prospect of massive parallelism of optics enabling fast and low energy cost operations is attracting interest for novel photonic circuits where 3-dimensional (3D) implementations have a high potential for scalability. Since the technology for data input-output channels is 2-dimensional (2D), there is an unavoidable need to take 2D-nD transformations into account. Similarly, the 3D-2D and its reverse transformations are also tackled in a variety of fields such as optical tomography, additive manufacturing, and 3D optical memories. Here, we review how these 3D-2D transformations are tackled using iterative techniques and neural networks. This high-level comparison across different, yet related fields could yield a useful perspective for 3D optical design.
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