High-speed photonically assisted analog-to-digital conversion using a continuous wave multiwavelength source and phase modulation

A more simple photonically assisted analog-to-digital conversion system utilizing a cw multiwavelength source and phase modulation instead of a mode-locked laser is presented. The output of the cw multiwavelength source is launched into a dispersive device (such as a single-mode fiber). This fiber c...

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Bibliographic Details
Published in:Optics letters 2008-10, Vol.33 (19), p.2230-2232
Main Authors: BORTNIK, Bartosz J, FETTERMAN, Harold R
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
Optical elements, devices, and systems
Optical processors, correlators, and modulators
Optics
Physics
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Summary:A more simple photonically assisted analog-to-digital conversion system utilizing a cw multiwavelength source and phase modulation instead of a mode-locked laser is presented. The output of the cw multiwavelength source is launched into a dispersive device (such as a single-mode fiber). This fiber creates a pulse train, where the central wavelength of each pulse corresponds to a spectral line of the optical source. The pulses can then be either dispersed again to perform discrete wavelength time stretching or demultiplexed for continuous time analog-to-digital conversion. We experimentally demonstrate the operation of both time stretched and interleaved systems at 38 GHz. The potential of integrating this type of system on a monolithic chip is discussed.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.33.002230