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Large-Scale High-Density Multimode Optical Switch Matrix
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DOI：10.1002/lpor.202400930.png)
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Optical switching technology is emerging as a solution to the limitations of traditional electronic switching. Combining optical switching with mode-division multiplexing effectively overcomes the limitations of expanding switching capacity solely by increasing the number of ports. This paper introduces a compact four-mode 2 x 2 optical switch and a four-mode reconfigurable non-blocking 4 x 4 optical switch matrix based on the Bene & scaron; architecture. The multimode 2 x 2 switch achieves an extinction ratio larger than 15 dB for all modes in the wavelength range of 1530-1590 nm. The multimode 4 x 4 switch matrix has an extinction ratio exceeding 9 dB for all modes and states in the C-band, with a compact size (1.46 x 0.23 mm(2)) and low power consumption (0-154 mW). It supports high-integrity 50 Gbaud PAM4 signal transmission with a bit error rate below the forward error correction limit. These devices pave the way for enhanced integration density and capacity in optical switching systems.
Keyword:
mode-division multiplexing
optical switch matrix
optical switching technology
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10
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3.7K
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