略語大辞典 [Opt] 23 CCG concentric-circle grating (waveguide) 同心円回折格子(導波路).concentric-circle grating (waveguide); e.g. CCGSE(concentric-circle grating, surface-emitting) semiconductor laser structure; [Opt:L]. 丸善「略語大辞典」JLogosID : 11868680