| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical path cross connection apparatus that does not need a wavelength cross-connect section WXC and has a simple structure at a low price.SOLUTION: In an optical path cross connection apparatus, 1×K wavelength group selection switches WBSS1 to WBSSK and K×1 wavelength group multiplexers WBC1 to WBCK perform route changes for inputted wavelength division multiplex light per a wavelength group, and 1×2 wavelength selection switches WSSd1 to WSSdK and drop array waveguide diffraction gratings AWGd1 to AWGdK function as a drop wavelength demultiplexer for separating an optical signal of a drop wavelength that terminates in a node #0, further add array waveguide diffraction gratings AWGa1 to AWGaK and 2×1 wavelength selection switches WSSa1 to WSSaK function as an add merger for merging an optical signal of an add wavelength into an optical output fiber to which the optical signal is directed, in a plurality of optical output fibers Fo1 to FoK. Thus, a large-scale wavelength selection switch or a wavelength cross-connect section WXC including the switch is not needed. |
