Optical signal switching device

Abstract

An optical signal switching device includes: an optical branching unit configured to receive optical signals from a plurality of light sources, respectively, and selectively switch a destination to which each of the optical signals is output to one of output destinations of a plurality of channels, a crossing unit configured to cross at least some optical signals among the optical signals output from the optical branching unit, and output terminals for each of a plurality of channels, each configured to output the optical signals output from the crossing unit.

Dependencies are inferred from the claim text.