| http://www.w3.org/ns/prov#value | - FIG. 1 shows an optical transmission apparatus 1 of a first embodiment of the invention, FIG. 1A is a plan view, and FIG. 1B is a section view taken along the line A-A in FIG. 1A. The optical transmission apparatus 1 is configured by a substrate 2, a plurality (in the figure, four) of optical transmission paths 3 which are mounted on the substrate 2, and a plurality (in the figure, four) of nodes
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