Title :
Nonlinear impairments in extremely dense WDM systems
Author :
Ciaramella, Ernesto
Author_Institution :
Photonic Networks Nat. Lab., CNIT, Pisa, Italy
fDate :
6/1/2002 12:00:00 AM
Abstract :
The capacity of current optical transmission systems could be greatly increased by using extremely dense wavelength-division-multiplexing. We show that this technique could suffer from enhanced interchannel interactions because of the very low frequency spacing. Considering 10-Gb/s channels with 12.5-GHz spacing, significant impairments can arise both in nonzero dispersion fiber and conventional single-mode fiber links. The effect is ascribed to cross-phase modulation, and could be partially mitigated by a proper dispersion map.
Keywords :
channel capacity; multiwave mixing; optical fibre communication; optical fibre dispersion; optical phase matching; phase modulation; wavelength division multiplexing; 10 Gbit/s; 10-Gb/s channels; 12.5-GHz spacing; capacity; conventional single-mode fiber links; cross-phase modulation; dispersion map; enhanced interchannel interactions; extremely dense WDM systems; extremely dense wavelength-division-multiplexing; four-wave mixing; nonlinear impairments; nonzero dispersion fiber; optical transmission systems; phase-matching condition; very low frequency spacing; Fiber nonlinear optics; Frequency; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Optical fibers; Optical propagation; Optical receivers; Ultraviolet sources; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1003099
