双孔定向藕合器 directional coupler two-hole

全光纤式定向藕合器 directional coupler all-fiber component

定向藕合器之藕合因子 directional coupler coupling factor of

定向藕合器之散射矩阵 directional coupler scattering matrix of

双埠定向藕合器 directional coupler two-port

星形定向藕合器 directional coupler star

定向藕合器之指向性 directional coupler directivity of

隙孔藕合式定向藕合器 directional coupler aperture copuling

倍兹孔定方向藕合器 coupler Bethe-hole directional