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

Author

Dudley, John M. ; Gutty, François ; Pitois, Stéphane ; Millot, Guy

Author_Institution

Lab. d´´Opt. P.M. Duffieux, Univ. de Franche-Comte, Besancon, France

Volume

37

Issue

4

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

587

Lastpage

594

Abstract

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

Keywords

Schrodinger equation; birefringence; microwave photonics; optical fibre dispersion; optical fibre polarisation; optical pulse generation; optical solitons; submillimetre wave generation; submillimetre wave measurement; 0.3 THz; 0.6 THz; 2.5 THz; FROG retrieval algorithms; autocorrelation functions; bright polarization domain wall soliton train; dark solitons; dispersive interactions; dual wavelength laser source; frequency-resolved optical gating; high-birefringence fiber; intensity; measurement technique; nonlinear Schrodinger equation simulations; nonlinear processes; numerical simulations; optical fibers; periodic pulse characteristics; phase; sinusoidal beat signal; spectra; synthetic pulse trains; terahertz pulse trains; ultra-low birefringence fiber; Character generation; Fiber nonlinear optics; Frequency; Measurement techniques; Optical fiber polarization; Optical pulse generation; Optical solitons; Pulse generation; Pulse measurements; Signal generators;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.914409

Filename

914409