Title :
Measurement of the nonlinear coefficient of optical fibers by femtosecond pulses and spectral interferometry
Author :
Liberale, Carlo ; Tartara, Luca ; Cristiani, Ilaria ; Cartasegna, Marco ; Degiorgio, Vittorio
Author_Institution :
Dipt. di Elettronica, Univ. di Pavia, Italy
Abstract :
Accurate measurements of the nonlinear coefficient /spl gamma/ of optical-communication fibers are performed by using 110-fs pulses. The nonlinear phase shift induced by self-phase modulation over a propagation length shorter than 1 m is detected by the spectral-interferometry technique. The value of /spl gamma/ is obtained by comparing the measured frequency-dependent nonlinear phase with the numerical solution of the nonlinear propagation equation.
Keywords :
light interferometry; measurement errors; optical fibre communication; optical fibre testing; optical parametric oscillators; optical pulse generation; self-phase modulation; 1 m; accurate measurements; femtosecond pulses; frequency-dependent nonlinear phase; nonlinear phase shift; nonlinear propagation equation; numerical solution; optical nonlinear coefficient measurement; optical-communication fibers; propagation length; self-phase modulation; spectral interferometry; spectral-interferometry technique; Fiber nonlinear optics; Optical fibers; Optical interferometry; Optical modulation; Optical propagation; Optical pulses; Performance evaluation; Phase shifting interferometry; Pulse measurements; Ultrafast optics;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.815359
