Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 56 Gb/s DMT Transmission with VCSELs in 1.5 um Wavelength Range over up
  to 12 km for DWDM Intra-Data Center Connects   We demonstrate up to 12 km, 56 Gb/s DMT transmission using high-speed VCSELs
in the 1.5 um wavelength range for future 400Gb/s intra-data center connects,
enabled by vestigial sideband filtering of the transmit signal.

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The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-ph
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org