Wavelength division multiplex (WDM) photonic networks are expected as the k
ey for the global communication infrastructure. Recent increase of communic
ation demands require large-scale highly-dense WDM systems, which results i
n severe requirements for optical cross-connect systems, such as cross-talk
specification. In this paper, we propose a new optical path cross-connect
system (OPXC) using matrix-WDM scheme, which makes it possible to reduce cr
oss-talk requirements of WDM filters and to construct OPXC in modular struc
tures. The matrix-WDM scheme is a concept of two-layered optical paths, whi
ch provides wavelength group managements in the fiber dispersion equalizati
on and EDFA gain equalization.