Title :
Driving Requirements for Wavelength Shifting in Colorless ONU With Dual-Arm Modulator
Author :
Omella, Mireia ; Lázaro, José Antonio ; Polo, Victor ; Prat, Josep
Author_Institution :
Univ. Politec. de Catalunya, Barcelona, Spain
Abstract :
Dual-arm modulator configurations to perform wavelength shifting at the optical network units (ONUs) for the mitigation of Rayleigh backscattering impairment in bidirectional centralized-light passive optical networks (PONs) are proposed, with different solutions compared. A 7 dB of sensitivity improvement due to the reduction in the Rayleigh scattering crosstalk between up- and down-stream signals is achieved with a suboptimal solution based on a conventional Mach-Zenhder modulator.
Keywords :
optical communication; optical crosstalk; optical modulation; Rayleigh backscattering impairment; Rayleigh scattering crosstalk; bidirectional centralized-light passive optical network; colorless ONU; driving requirements; dual-arm modulator configuration; optical network units; wavelength shifting; Electrooptic modulation; Rayleigh scattering; frequency conversion; optical fiber communication;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2020920
