Title :
All-optical signal reshaping by means of four-wave mixing in optical fibers
Author :
Ciaramella, Ernesto ; Curti, Franco ; Trillo, Stefano
Author_Institution :
QPlus Networks Italia, Rome, Italy
fDate :
2/1/2001 12:00:00 AM
Abstract :
It is experimentally demonstrated that the four-wave mixing (FWM) effect in an optical fiber can be exploited to achieve all-optical reshaping. The injection of a signal and a strong continuous-wave (CW) pump into a common dispersion-shifted fiber results in several wavelength-converted replicas of the signal. These spectral components exhibit various reshaping behaviors. Selecting low-order FWM waves, we observe a sinusoidal-like transfer function. However, unlike other reshaping devices, a step-like transfer function is obtained for higher order mixing products. A significant noise compression is observed at the converted output, starting from an input noisy nonreturn-to-zero (NRZ) signal stream.
Keywords :
multiwave mixing; optical fibre communication; optical fibre dispersion; optical noise; optical pumping; optical transfer function; all-optical reshaping; all-optical signal reshaping; continuous-wave pump; converted output; dispersion-shifted fiber; four-wave mixing; four-wave mixing effect; higher order mixing products; input noisy nonreturn-to-zero signal stream; noise compression; nonreturn-to-zero signal; optical fibers; reshaping behaviors; reshaping devices; signal injection; signal replicas; sinusoidal-like transfer function; step-like transfer function; wavelength-converted replicas; Fiber nonlinear optics; Four-wave mixing; Optical devices; Optical fibers; Optical interferometry; Optical mixing; Optical noise; Optical pumping; Optical wavelength conversion; Transfer functions;
Journal_Title :
Photonics Technology Letters, IEEE
