Development of real-time method to measure SIL-DISK spacing for superlow-flying system

Dapeng Zhao; Yanyang Zi; Qingxiang Li; Lifen Bai; Yuhe Li

doi:10.1117/12.483350

17 September 2002 Development of real-time method to measure SIL-DISK spacing for super-low-flying system

Dapeng Zhao, Yanyang Zi, Qingxiang Li, Lifen Bai, Yuhe Li

Proceedings Volume 4930, Advanced Optical Storage Technology; (2002) https://doi.org/10.1117/12.483350
Event: Photonics Asia, 2002, Shanghai, China

Abstract

The advanced data storage technology is important to information era. Among all sorts of solutions of high-density storage, near field optical disc technology (NFOD) is high speed and mass storage technology with excellent aptitude and future, and it is the focus of data storage research field in the pioneer technology. Today the research institutes all over the world are speeding their research on NFOD. By using the techniques of solid immersion lens (SIL) and super-low-flying system, it can achieve not only super-high recording density that can be much more higher than traditional optical disks but also the hard disks. In order to improving near-field coupling efficiency of SIL-TO-DISK, the SIL must keep sub micron flying height from the disk, so it is necessary to discuss the research process of real time method to measure SIL-TO-DISK for super-low-flying system. This paper analyses technique foundation and characteristc and its key problem for the flying height measurement, the paper studies several practicing plan of real time measure the clearance even when the SIL-DISK spacing is down to nanometer level for example, relative light intensity method, the capacitance displacement sensors, effective refractive index method for frustrated total reflection, and compare the characteristic and precision of those approach.

Citation Download Citation

Dapeng Zhao, Yanyang Zi, Qingxiang Li, Lifen Bai, and Yuhe Li "Development of real-time method to measure SIL-DISK spacing for super-low-flying system", Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); https://doi.org/10.1117/12.483350

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available