The coupler induces and couples high-frequency electromagnetic energy created by the generator into the bulb, which makes the air inside the bulb cumulatively ionized into plasma.

• 耦合器装于灯泡内，通过馈线与高频发生器连接，将高频发生器所产生的高频电磁能感应耦合到灯泡内，使灯泡内的气体雪崩电离形成等离子体。