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首页> 外文期刊>Magnetics, IEEE Transactions on >Feasibility Analysis of On-Wafer Microfocal Lens for Optical Coupling in Heat-Assisted Magnetic Recording Systems
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Feasibility Analysis of On-Wafer Microfocal Lens for Optical Coupling in Heat-Assisted Magnetic Recording Systems

机译：热辅助磁记录系统中用于光学耦合的晶片上微焦点透镜的可行性分析

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摘要

An on-wafer microfocal lens was previously reported to assist external optical coupling in heat-assisted magnetic recording (HAMR) systems. In this paper, we report a thorough analysis of lens performance over the range of industry practical wavelengths (400–830 nm) with discussion on the beam polarization dependence. Manufacturing tolerance of the on-wafer microfocal lens is also evaluated based on industry conventional top-down fabrication process. The 3-D numerical simulation results show that the lens design is robust for industry manufacturability. Further comparison of the focal spot sizes and dimensions of other reported optical components shows that high-efficiency internal optical coupling is also achievable between the lens output beam and other near-field transducers. Thus, the on-wafer microfocal lens could potentially provide a low-cost large-volume manufacturing solution for HAMR optical coupling in the hard disk drive industry.
机译：先前已经报道了晶圆上微焦点透镜可协助热辅助磁记录（HAMR）系统中的外部光学耦合。在本文中，我们报告了在工业实用波长范围（400–830 nm）内对透镜性能的透彻分析，并讨论了光束的偏振依赖性。还基于工业常规的自上而下的制造工艺来评估晶圆上微焦点透镜的制造公差。 3-D数值模拟结果表明，该镜头设计具有很好的工业可制造性。焦点大小和其他报道的光学组件的尺寸的进一步比较表明，在透镜输出光束和其他近场换能器之间也可以实现高效的内部光学耦合。因此，晶圆上微焦点透镜有可能为硬盘驱动器行业中的HAMR光耦合器提供低成本的大批量制造解决方案。

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