Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Laser-based underwater transfer of radio-frequency clock signal with
  electronic phase compensation   We demonstrate a laser-based underwater transfer of radio frequency clock
signal with a phase compensation technique. With this frequency transfer
scheme, a 100 MHz signal has been transferred over 5 m underwater link. Timing
jitter power spectral density, timing fluctuations and instabilities were all
measured to evaluate the quality of the transferred frequency signal. The
experimental results show the root-mean-square (RMS) timing fluctuations of the
transferred frequency signal over 5 m underwater link with and without phase
compensation are 2.1 ps and 9.6 ps within 5000 s, respectively. The relative
fractional frequency instabilities are on the order of 5E-13 at 1 s and 7E-16
at 1000 s for phase-compensated link, and 2E-12 at 1 s and 7E-15 at 1000 sfor
uncompensated link, respectively. The proposed frequency transfer scheme has a
potential application that disseminating Cs and H-master clocks signal over the
underwater transmission link since the stability of the transmission link is
superior to these atomic clocks.

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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: mtrl-th
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The categories of this paper are: math
33
The categories of this paper are: plasm-ph