公开(公告)号：US09759863B1

公开(公告)日：2017-09-12

申请号：US15145905

申请日：2016-05-04

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Mark Ostrowski ,  Chang Xie ,  Tae-Woo Lee ,  Lisa M. Hanson

IPC: G02B6/26 ,  G02B6/42 ,  G02B6/14 ,  G02B6/122 ,  G02B6/028 ,  G02B6/12 ,  G11B5/31

CPC classification number: G02B6/14 ,  G02B6/0283 ,  G02B6/1228 ,  G02B2006/12147 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A waveguide a core extending along a light propagation and a coupling layer adjacent one side of the core along the light propagation direction. A gradient index material is adjacent to at least one side of the coupling layer. The gradient index material has a first refractive index proximate the coupling layer and a second refractive index away from the coupling layer. The gradient index material is configured to direct light from an input facet to the core layer.