Diffractive Interconnects: All-Optical Permutation Operation Using
Diffractive Networks
- URL: http://arxiv.org/abs/2206.10152v1
- Date: Tue, 21 Jun 2022 07:25:06 GMT
- Title: Diffractive Interconnects: All-Optical Permutation Operation Using
Diffractive Networks
- Authors: Deniz Mengu, Yifan Zhao, Anika Tabassum, Mona Jarrahi, Aydogan Ozcan
- Abstract summary: We present diffractive optical networks engineered through deep learning to all-optically perform permutation operations.
The presented diffractive permutation networks can potentially serve as channel routing and interconnection panels in wireless networks.
- Score: 18.22140098600563
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Permutation matrices form an important computational building block
frequently used in various fields including e.g., communications, information
security and data processing. Optical implementation of permutation operators
with relatively large number of input-output interconnections based on
power-efficient, fast, and compact platforms is highly desirable. Here, we
present diffractive optical networks engineered through deep learning to
all-optically perform permutation operations that can scale to hundreds of
thousands of interconnections between an input and an output field-of-view
using passive transmissive layers that are individually structured at the
wavelength scale. Our findings indicate that the capacity of the diffractive
optical network in approximating a given permutation operation increases
proportional to the number of diffractive layers and trainable transmission
elements in the system. Such deeper diffractive network designs can pose
practical challenges in terms of physical alignment and output diffraction
efficiency of the system. We addressed these challenges by designing
misalignment tolerant diffractive designs that can all-optically perform
arbitrarily-selected permutation operations, and experimentally demonstrated,
for the first time, a diffractive permutation network that operates at THz part
of the spectrum. Diffractive permutation networks might find various
applications in e.g., security, image encryption and data processing, along
with telecommunications; especially with the carrier frequencies in wireless
communications approaching THz-bands, the presented diffractive permutation
networks can potentially serve as channel routing and interconnection panels in
wireless networks.
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