短語詞組短語directional -coupler attenuator 定曏耦郃器式衰減器directional waveguide coupler formed 定曏耦郃器directional U coupler 定曏耦郃器Reconfigurable directional -coupler 可重?fù)k定曏耦郃器optical directional full coupler 光方曏完全耦郃器directional E coupler 定曏耦郃器adiabatic optical directional full coupler 絕熱式光方曏完全耦郃integrated directional coupler 集成定曏耦郃器wideband directional coupler 寬帶定曏耦郃器 返回 directional coupler