Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dual Frequency Comb Assisted Analog-to-Digital Conversion of Subcarrier
  Modulated Signals   Photonic analog to digital conversion offers promise to overcome the
signal-to-noise ratio (SNR) and sample rate trade-off in conventional analog to
digital converters (ADCs), critical for modern digital communications and
signal analysis. We propose using phase-stable dual frequency combs with a
fixed frequency spacing offset to downconvert spectral slices of a broadband
signal and enable high resolution parallel digitization. To prove the concept
of our proposed method, we demonstrate the detection of a 10-GHz subcarrier
modulated (SCM) signal using 500-MHz bandwidth ADCs by optically converting the
SCM signal to ten 1-GHz bandwidth signals that can be processed in parallel for
full signal detection and reconstruction. Using sinusoidal wave based standard
ADC testing, we demonstrate a spurious-free dynamic range (SFDR) of >45dB and
signal-to-noise-and-distortion (SINAD) of >20dB, only limited by the receiver
front-end design. Our experimental investigation reveals that this SINAD
limitation can be overcome by improved receiver design, promising high
resolution ADC for broadband signals.

34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph