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Title: Signal digitizing system and method based on amplitude-to-time optical mapping

Abstract

A signal digitizing system and method based on analog-to-time optical mapping, optically maps amplitude information of an analog signal of interest first into wavelength information using an amplitude tunable filter (ATF) to impress spectral changes induced by the amplitude of the analog signal onto a carrier signal, i.e. a train of optical pulses, and next from wavelength information to temporal information using a dispersive element so that temporal information representing the amplitude information is encoded in the time domain in the carrier signal. Optical-to-electrical conversion of the optical pulses into voltage waveforms and subsequently digitizing the voltage waveforms into a digital image enables the temporal information to be resolved and quantized in the time domain. The digital image may them be digital signal processed to digitally reconstruct the analog signal based on the temporal information with high fidelity.

Inventors:
; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1167204
Patent Number(s):
8,934,058
Application Number:
14/092,763
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Nov 27
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Chou, Jason, Bennett, Corey V, and Hernandez, Vince. Signal digitizing system and method based on amplitude-to-time optical mapping. United States: N. p., 2015. Web.
Chou, Jason, Bennett, Corey V, & Hernandez, Vince. Signal digitizing system and method based on amplitude-to-time optical mapping. United States.
Chou, Jason, Bennett, Corey V, and Hernandez, Vince. Tue . "Signal digitizing system and method based on amplitude-to-time optical mapping". United States. https://www.osti.gov/servlets/purl/1167204.
@article{osti_1167204,
title = {Signal digitizing system and method based on amplitude-to-time optical mapping},
author = {Chou, Jason and Bennett, Corey V and Hernandez, Vince},
abstractNote = {A signal digitizing system and method based on analog-to-time optical mapping, optically maps amplitude information of an analog signal of interest first into wavelength information using an amplitude tunable filter (ATF) to impress spectral changes induced by the amplitude of the analog signal onto a carrier signal, i.e. a train of optical pulses, and next from wavelength information to temporal information using a dispersive element so that temporal information representing the amplitude information is encoded in the time domain in the carrier signal. Optical-to-electrical conversion of the optical pulses into voltage waveforms and subsequently digitizing the voltage waveforms into a digital image enables the temporal information to be resolved and quantized in the time domain. The digital image may them be digital signal processed to digitally reconstruct the analog signal based on the temporal information with high fidelity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {1}
}

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Works referenced in this record:

Optically sampled analog-to-digital converters
journal, January 2001

  • Juodawlkis, P. W.; Twichell, J. C.; Betts, G. E.
  • IEEE Transactions on Microwave Theory and Techniques, Vol. 49, Issue 10
  • DOI: 10.1109/22.954797

Photonic analog-to-digital converters
journal, January 2007