Optical vestigial sideband (VSB) transmission

摘要

A VSB generation control system is provided that uses received signal quality (detected error rate) as a measure of correct VSB filter or signal wavelength adjustment. The use of VSB will offer spectral efficiency improvements for optical transmission and the margins gained may be used either to increase span length or reduce wavelength spacing. The control loops proposed offer minimal complexity and implementation whilst providing reliable and understandable performance improvement.