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【单选题】
下列关于光纤耦合器的制备工艺，错误的论述是哪个？A.
浸蚀法 制备光纤耦合器的步骤包括腐蚀、匹配和胶合
B.
磨削法制备光纤耦合器的步骤主要包括研磨、匹配、对拼、胶合等
C.
熔锥法制备光纤耦合器的步骤包含胶合、加热拉锥等
D.
目前制备光纤耦合器最常用的方法为浸蚀法
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