Complete characterization of terahertz pulse trains generated from nonlinear processes in optical fibers

The measurement technique of frequency-resolved optical gating (FROG) is used to characterize the intensity and phase of terahertz pulse trains generated from nonlinear and dispersive interactions in optical fibers. We show that existing FROG retrieval algorithms are easily adapted to allow the retr...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2001-04, Vol.37 (4), p.587-594
Main Authors: Dudley, J.M., Gutty, F., Pitois, S., Millot, G.
Format: Article
Language:English
Subjects:
Applied sciences
Character generation
Circuit properties
Computer simulation
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fiber nonlinear optics
Fibers
Frequency
Frogs
Fundamental areas of phenomenology (including applications)
Integrated optics. Optical fibers and wave guides
Measurement techniques
Nonlinear optics
Nonlinearity
Optical and optoelectronic circuits
Optical fiber polarization
Optical fibers
Optical pulse generation
Optical solitons
Optical solitons
nonlinear guided waves
Optics
Physics
Propagation, scattering, and losses
solitons
Pulse generation
Pulse measurements
Retrieval
Signal generators
Solitons
Trains
Ultrafast processes
optical pulse generation and pulse compression
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Description
Summary:The measurement technique of frequency-resolved optical gating (FROG) is used to characterize the intensity and phase of terahertz pulse trains generated from nonlinear and dispersive interactions in optical fibers. We show that existing FROG retrieval algorithms are easily adapted to allow the retrieval of periodic pulse characteristics and, using synthetic pulse trains generated from numerical simulations, we demonstrate how FROG can differentiate between periodic pulse trains with fundamentally different intensity and phase characteristics, yet qualitatively similar autocorrelation functions and spectra. Experimental results are presented for the FROG characterization of a 0.3-THz sinusoidal beat signal from a dual wavelength laser source, a 2.5-THz train of dark solitons generated in a high-birefringence fiber, and a 0.6-THz bright polarization domain wall soliton train generated in an ultra-low birefringence fiber. These results are shown to be in good agreement with nonlinear Schrodinger equation simulations.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.914409