Measurement of the nonlinear refractive index of long dispersion-shifted fibers by self-phase modulation at 1.55 μm

Author

Stolen, Roger H. ; Reed, William A. ; Kim, Kwang S. ; Harvey, G.T.

Author_Institution

AT&T Labs. Res., Red Bank, NJ, USA

Volume

16

Issue

6

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

1006

Lastpage

1012

Abstract

We measure a value of N₂=2.45×10^-16 cm ²/W (±5%) by self-phase modulation (SPM) in two 20 km dispersion-shifted fibers for random polarization at 1.55 μm. There is still some dispersive broadening and we find that an accurate determination of N₂ requires fitting the experimental (SPM) spectra with a computer simulation to account for the variation in pulse shape and fiber properties along the length of the fiber. We also show that spectral information provides information about the input pulse properties

Keywords

nonlinear optics; optical fibre communication; optical fibre dispersion; optical fibre polarisation; optical fibre testing; optical modulation; phase modulation; refractive index measurement; 1.55 mum; 20 km; accurate determination; computer simulation; dispersion-shifted fibers; dispersive broadening; experimental spectra; fiber properties; input pulse properties; long dispersion-shifted fibers; nonlinear refractive index measurement; pulse shape; random polarization; self-phase modulation; spectral information; Area measurement; Dispersion; Length measurement; Optical fiber polarization; Optical pulse shaping; Pulse amplifiers; Pulse measurements; Refractive index; Scanning probe microscopy; Wavelength measurement;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.681457

Filename

681457