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发明授权
US09558764B2 Waveguide of a write head with reduced cross sectional area proximate a near-field transducer 有权
写入头的波导，靠近近场换能器的截面积减小

Waveguide of a write head with reduced cross sectional area proximate a near-field transducer
摘要：
A write head includes a near-field transducer near a media-facing surface of the write head. The write head includes a waveguide having a core with a first side disposed proximate to the near-field transducer. The core overlaps the near-field transducer at a substrate-parallel plane. The core includes one of a step or a taper on a second side facing away from the first side. The step or the taper causes a reduced thickness of the core normal to the substrate-parallel plane. The write head includes a cladding layer that encompassing the second side of the core and that fills in the step or the taper.
摘要（中）：

写头包括靠近写入头的面向媒体的表面附近的近场换能器。 写头包括具有芯的波导，第一侧靠近近场换能器设置。 核心在基板平行平面处与近场换能器重叠。 芯部包括在远离第一侧的第二侧上的台阶或锥形中的一个。 台阶或锥形导致芯垂直于基板平行平面的芯的厚度减小。 写头包括包围芯的第二侧并且填充在台阶或锥形中的包覆层。

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