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. 耦合器裝于燈泡內,通過(guò)饋線(xiàn)與高頻發(fā)生器連接,將高頻發(fā)生器所產(chǎn)生的高頻電磁能感應耦合到燈泡內,使燈泡內的氣體雪崩電離形成等離子體。