Optical analog-to-digital converter
Abstract
An optical analog-to-digital converter (ADC) is disclosed which converts an input optical analog signal to an output optical digital signal at a sampling rate defined by a sampling optical signal. Each bit of the digital representation is separately determined using an optical waveguide interferometer and an optical thresholding element. The interferometer uses the optical analog signal and the sampling optical signal to generate a sinusoidally-varying output signal using cross-phase-modulation (XPM) or a photocurrent generated from the optical analog signal. The sinusoidally-varying output signal is then digitized by the thresholding element, which includes a saturable absorber or at least one semiconductor optical amplifier, to form the optical digital signal which can be output either in parallel or serially.
- Inventors:
-
- Corrales, NM
- Goleta, CA
- Albuquerque, NM
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 968641
- Patent Number(s):
- 7564387
- Application Number:
- 12/039,931
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Vawter, G Allen, Raring, James, and Skogen, Erik J. Optical analog-to-digital converter. United States: N. p., 2009.
Web.
Vawter, G Allen, Raring, James, & Skogen, Erik J. Optical analog-to-digital converter. United States.
Vawter, G Allen, Raring, James, and Skogen, Erik J. Tue .
"Optical analog-to-digital converter". United States. https://www.osti.gov/servlets/purl/968641.
@article{osti_968641,
title = {Optical analog-to-digital converter},
author = {Vawter, G Allen and Raring, James and Skogen, Erik J},
abstractNote = {An optical analog-to-digital converter (ADC) is disclosed which converts an input optical analog signal to an output optical digital signal at a sampling rate defined by a sampling optical signal. Each bit of the digital representation is separately determined using an optical waveguide interferometer and an optical thresholding element. The interferometer uses the optical analog signal and the sampling optical signal to generate a sinusoidally-varying output signal using cross-phase-modulation (XPM) or a photocurrent generated from the optical analog signal. The sinusoidally-varying output signal is then digitized by the thresholding element, which includes a saturable absorber or at least one semiconductor optical amplifier, to form the optical digital signal which can be output either in parallel or serially.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 21 00:00:00 EDT 2009},
month = {Tue Jul 21 00:00:00 EDT 2009}
}
Works referenced in this record:
Monolithically integrated active components: a quantum-well intermixing approach
journal, March 2005
- Skogen, E. J.; Raring, J. W.; Morrison, G. B.
- IEEE Journal of Selected Topics in Quantum Electronics, Vol. 11, Issue 2, p. 343-355
All-optical Mach-Zehnder wavelength converter with monolithically integrated DFB probe source
journal, October 1997
- Spiekman, L. H.; Koren, U.; Chien, M. D.
- IEEE Photonics Technology Letters, Vol. 9, Issue 10
All-optical 2R regeneration based on integrated asymmetric Mach-Zehnder interferometer incorporating MMI-SOA
journal, January 2002
- De Merlier, J.; Morthier, G.; Van Daele, P.
- Electronics Letters, Vol. 38, Issue 5
40-Gb/s Widely Tunable Transceivers
journal, January 2007
- Raring, James W.; Coldren, Larry A.
- IEEE Journal of Selected Topics in Quantum Electronics, Vol. 13, Issue 1, p. 3-14
Optical multi-mode interference devices based on self-imaging: principles and applications
journal, April 1995
- Soldano, L. B.; Pennings, E. C. M.
- Journal of Lightwave Technology, Vol. 13, Issue 4
2R limiter circuit with gain clamped SOA for XGM wavelength converter
journal, February 2005
- Kang, J. -M.; Kim, Y. -O.; Lee, J. -H.
- IEE Proceedings - Optoelectronics, Vol. 152, Issue 1
28 ps recovery time in an InGaAsP/InGaAsP multiple-quantum-well saturable absorber employing carrier sweepout
journal, October 2001
- Burr, E. P.; Song, J. B.; Seeds, A. J.
- Journal of Applied Physics, Vol. 90, Issue 7
Use of fast in-line saturable absorbers in wavelength-division-multiplexed soliton systems
journal, June 1998
- Audouin, O.; Pallise, E.; Desurvire, E.
- IEEE Photonics Technology Letters, Vol. 10, Issue 6
Semiconductor optical amplifier-based all-optical gates for high-speed optical processing
journal, November 2000
- Stubkjaer, K. E.
- IEEE Journal of Selected Topics in Quantum Electronics, Vol. 6, Issue 6
Photonic analog-to-digital converters
journal, January 2007
- Valley, George C.
- Optics Express, Vol. 15, Issue 5