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Light delivery waveguide

A technology of waveguide and light source, applied in the field of optical transmission waveguide

Active Publication Date: 2014-06-25
SEAGATE TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one problem is to guide light into waveguides in sliders associated with magnetic recording heads at low cost, good alignment tolerances, and high light transmission efficiency.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0023] figure 1 A plan view of an exemplary disk drive 100 is shown. Disk drive 100 includes a base 102 on which various components of disk drive 100 are mounted. A top cover 104, shown with a portion cut away, combines with the base 102 to provide a clean environment inside the disk drive in a conventional manner. These components include a spindle motor 106 that rotates one or more storage media disks 108 at a constant high speed. Information is written to and read from tracks on the disk 108 by using an actuator assembly 110 that surrounds a bearing shaft assembly 112 located adjacent to the disk 108 during a seek operation. rotate. The actuator assembly 110 includes a plurality of actuator arms 114 extending toward the disc 108 with one or more flexures 116 extending from each of the actuator arms 114 . Mounted at the distal end of each of the flexures 116 is a magnetic head 118 that includes an air bearing slider that enables the magnetic head 118 to fly proximately a...

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Abstract

A light source and a waveguide are mounted on a recording head slider. Light rays are emitted from the light source into the waveguide. The waveguide may include two core layers for light ray transmission. The first core layer enhances light coupling efficiency from the light source to the second core layer. The second core layer transforms a profile of the light. The waveguide may include a tapered portion with a narrow opening near the light source and a wider opening near the tapered portion exit. The light rays passing through the waveguide may be directed toward a collimating mirror. The collimating mirror makes the light rays parallel or nearly parallel and re-directs the light rays to a focusing mirror. The focusing mirror focuses the collimated light rays to a spot on a magnetic media disc.

Description

Background technique [0001] "Heat-assisted magnetic recording", light-assisted recording or heat-assisted recording (hereinafter collectively referred to as HAMR) generally refers to the concept of locally heating the recording medium to temporarily soften the recording medium caused by the local heating During this process the coercive force of the recording medium is reduced so that the applied magnetic write field can more easily affect the magnetization of the recording medium. HAMR allows the use of small particle media, which is desirable for recording operations with increased areal density and larger magnetic anisotropy at room temperature to ensure sufficient thermal stability. HAMR can be applied to any type of storage media, including, for example, inclined media, longitudinal media, perpendicular media, and / or patterned media. [0002] When heat or a light source is applied to a magnetic medium, it is desirable to confine the heat or light to one track where writi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B11/105G11B5/127
CPCG11B2005/0021G02B5/10G11B5/6088G11B5/314G11B2005/001G11B11/24G02B6/26
Inventor C·彭E·C·盖奇K·佩尔赫斯
Owner SEAGATE TECH LLC
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