## Abstract

A simple four-wave-mixing (FWM)-based method for measuring the ratio between the third- and the fourth-order dispersion coefficients $({\beta}_{3}\u2215{\beta}_{4})$ in optical fibers is reported. The FWM interaction involves a low power laser and a low power amplified spontaneous emission noise source. The method is applied in several dispersion-shifted and non-zero-dispersion-shifted fibers with lengths varying from 0.03 to $25\phantom{\rule{0.2em}{0ex}}\mathrm{km}$, and we have obtained an error of less than 3% in measuring ${\beta}_{3}\u2215{\beta}_{4}$. In highly nonlinear fibers the error has presented a strong dependency with longitudinal variations of the zero-dispersion wavelength $\left({\lambda}_{0}\right)$; an error less than 20% could be obtained in most of the tested fibers. Our method also allows for a fast estimation of the distribution of fluctuations of ${\lambda}_{0}$ along the fiber.

© 2007 Optical Society of America

Full Article | PDF Article**OSA Recommended Articles**

Jay E. Sharping, Marco Fiorentino, Ayodeji Coker, Prem Kumar, and Robert S. Windeler

Opt. Lett. **26**(14) 1048-1050 (2001)

Miguel González-Herráez, Pedro Corredera, Maria L. Hernanz, and José A. Méndez

Opt. Lett. **27**(17) 1546-1548 (2002)

S. J. Jung, J. Y. Lee, and D. Y. Kim

Opt. Express **14**(1) 35-43 (2006)