Title :
Increased Nonlinear Crosstalk in Analog Wavelength-Division-Multiplexed Links Due to the Chromatic Dispersion of Optical Filters
Author :
Campillo, Anthony L. ; Bucholtz, Frank
Author_Institution :
Naval Res. Lab., Washington, DC
Abstract :
The effect of the chromatic dispersion of an interference filter on the nonlinear crosstalk in a wavelength-division-multiplexed microwave photonic system is investigated. For a simple two-channel pump-probe system with 200-GHz channel spacing, a crosstalk variation of greater than 30 dB is observed as the wavelength of the probe is varied across the flat-top region of the filter. The crosstalk is correlated with the dispersion of the filter and a variation of less than 7% of the filter width is observed to increase the crosstalk by 10 dB. An analytical model for calculating the crosstalk is presented
Keywords :
channel spacing; interference filters; microwave photonics; nonlinear optics; optical crosstalk; optical fibre communication; optical fibre dispersion; optical fibre filters; wavelength division multiplexing; 200 GHz; analog links; channel spacing; chromatic dispersion; crosstalk variation; interference filter; microwave photonic system; nonlinear crosstalk; optical filters; pump-probe system; two-channel system; wavelength-division multiplexing; Chromatic dispersion; Crosstalk; Fiber nonlinear optics; Nonlinear optics; Optical attenuators; Optical filters; Optical modulation; Probes; Radio frequency; Wavelength division multiplexing; Analog systems; crosstalk; optical filters; wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.882229
