Figure | Working principle of the optical neural network chip for OAM mode switching. (IMAGE)
Caption
Figure | Working principle of the optical neural network chip for OAM mode switching. a, Schematic of the fibre-chip-fibre OAM modes optical switching. DEMUX: Demultiplexer; MUX: Multiplexer. b, Flowchart of the gradient descent algorithm and curve showing the variation of the experimentally measured maximum crosstalk with optimization iteration cycles during the switch from channels 1, 2, and 3 to channels 2, 3, and 1. b, BER versus OSNR curves of QPSK, 8-QAM, and 16-QAM signals at position x4 under two different switching states, along with constellation diagrams at position x4 for switching state 1, switching state 2, and single-channel transmission. (Switching state 1: Input channels 1, 2 and 3 swapped to output channels 2, 3 and 1. Switching state 2: Input channels 1, 2 and 3 swapped to output channels 1, 2 and 3.)
Credit
by Zhengsen Ruan, Yuanjian Wan, Lulu Wang, Wei Zhou, and Jian Wang
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Credit must be given to the creator.
License
CC BY