略語大辞典 [Opt] 22 SDC symmetric directional coupler 路で対称的に構成した方向性光結合器.symmetric directional coupler; an optical waveguide coupler, consisting of two identical waveguides; [Opt:C].対称型方向性結合器. 同形の二つの導波 丸善「略語大辞典」JLogosID : 11857035