Invention Grant
US08456966B1 Method and system for enhancing optical efficiency for an EAMR head
有权
用于提高EAMR头的光学效率的方法和系统
- Patent Title: Method and system for enhancing optical efficiency for an EAMR head
- Patent Title (中): 用于提高EAMR头的光学效率的方法和系统
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Application No.: US12971754Application Date: 2010-12-17
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Publication No.: US08456966B1Publication Date: 2013-06-04
- Inventor: Zhong Shi , Shing Lee , Hongxing Yuan , Rabee M. Ikkawi
- Applicant: Zhong Shi , Shing Lee , Hongxing Yuan , Rabee M. Ikkawi
- Applicant Address: US CA Fremont
- Assignee: Western Digital (Fremont), LLC
- Current Assignee: Western Digital (Fremont), LLC
- Current Assignee Address: US CA Fremont
- Main IPC: G11B11/00
- IPC: G11B11/00

Abstract:
A method and system for providing an EAMR transducer and a waveguide used therein are described. The EAMR transducer is coupled with a laser that provides energy. The EAMR transducer also has an ABS that resides in proximity to a media during use. The EAMR transducer includes a waveguide, a write pole to write to a region of the media, coil(s) for energizing the write pole, and a near field transducer (NFT) proximate to the ABS for focusing the energy onto the media. The waveguide includes a mode shift compensator, first and second cladding layers, and a core between the cladding layers. The core directs energy from the laser toward the ABS and has a core index of refraction. The core is also between the mode shift compensator and the NFT. The mode shift compensator has a mode shift compensator index of refraction less than the core index of refraction.
Information query
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