Modeling Of A Magneto-Optic Read Path

T. D. Milster; T. S. Gardner

doi:10.1117/12.944605

2 June 1988 Modeling Of A Magneto-Optic Read Path

T. D. Milster, T. S. Gardner

Proceedings Volume 0899, Optical Storage Technology and Applications; (1988) https://doi.org/10.1117/12.944605
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Elements of the read path of a magneto-optic (MO) storage device are the lens that focuses the light onto the disk, the interaction with the disk, the propagation back through the objective lens, the polarization optics, and the detectors. This paper describes a program that simulates the effect of several disk parameters on the signal and noise of the read path. The program uses a scalar diffraction model and incorporates geometrical and optical properties of the disk, such as groove shape, signal pattern, and defects. An estimate of the signal current as a function of time is generated by the spot scanning along a length of the simulated disk that has an MO signal pattern and noise written on it. The signal calculated from the diffracted fields provides an estimate of the power spectrum, to which the effects of shot noise and amplifier noise are added to provide a total description of the read path.

Citation Download Citation

T. D. Milster and T. S. Gardner "Modeling Of A Magneto-Optic Read Path", Proc. SPIE 0899, Optical Storage Technology and Applications, (2 June 1988); https://doi.org/10.1117/12.944605

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