发明名称 |
Optical devices including layers that wrap the near field transducer (NFT) |
摘要 |
A device having an air bearing surface (ABS), the device including a near field transducer (NFT), the NFT having at least a portion thereof at the ABS; a first wrap layer, the first wrap layer surrounding at least a portion of the NFT, the first wrap layer having a thickness of not greater than about 30 nanometers (nm), and the first wrap layer being made of a material that has a refractive index (n) that is not greater than 2.0; a second wrap layer, the second wrap layer surrounding at least a portion of the first wrap layer, the second wrap layer having a thickness that is not greater than 100 nm, and the second wrap layer being made of a material that has a refractive index (n) that is at least about 1.9; and a top cladding layer surrounding at least a portion of the second wrap layer, the top cladding layer being made of a material that has a refractive index (n) that is not greater than 2.0. |
申请公布号 |
US9099138(B2) |
申请公布日期 |
2015.08.04 |
申请号 |
US201314135910 |
申请日期 |
2013.12.20 |
申请人 |
Seagate Technology LLC |
发明人 |
Peng Chubing;Zhou Hua |
分类号 |
G11B11/24;G11B5/60;G11B5/00 |
主分类号 |
G11B11/24 |
代理机构 |
Mueting, Raasch & Gebhardt, P.A. |
代理人 |
Mueting, Raasch & Gebhardt, P.A. |
主权项 |
1. A device having an air bearing surface (ABS), the device comprising:
a near field transducer (NFT), the NFT having at least a portion thereof at the ABS; a first wrap layer, the first wrap layer surrounding at least a portion of the NFT, the first wrap layer having a thickness of not greater than about 30 nanometers (nm), and the first wrap layer comprising a material that has a refractive index (n) that is not greater than 2.0; a second wrap layer, the second wrap layer surrounding at least a portion of the first wrap layer, the second wrap layer having a thickness that is not greater than 100 nm, and the second wrap layer comprising a material that has a refractive index (n) that is at least about 1.9; and a top cladding layer surrounding at let a portion of the second wrap layer, the top cladding layer comprising a material that has a refractive index (n) that is not greater than 2.0. |
地址 |
Cupertino CA US |