Patent ID: 7054560

Claim:
A reducing assembly, comprising: a planar optical circuit; a plurality of reducing units disposed in said planar optical circuit; a plurality of optical main channels passing through said reducing units; monitoring channels allocated to said plurality of optical main channels, said monitoring channels receiving a specific percentage of optical power of an associated one of said main channels coupled to an associated one of said monitoring channels and said monitoring channels outputting optical signals; at least one deflection device being a prism inserted into the plane of said planar optical circuit, said deflection device coupling the optical signals of said monitoring channels at least partially out of a plane of said planar optical circuit; and a plurality of detection units for detecting the optical signals coupled out outside the plane of said planar optical circuit by said deflection device; said prism having a surface constructed as a deflecting mirror by which the optical signals are reflected out of the plane of said planar optical circuit, said prism being a prism strip to which said plurality of detection units are allocated, the optical signals of said monitoring optical channels are respectively reflected by a region of said prism strip and guided onto a corresponding one of said detection units.