Analysis Of Magneto-Optic Media For Optical Disk Drives

M. Keppler; G. Goldmann

doi:10.1117/12.944607

2 June 1988 Analysis Of Magneto-Optic Media For Optical Disk Drives

M. Keppler, G. Goldmann

Proceedings Volume 0899, Optical Storage Technology and Applications; (1988) https://doi.org/10.1117/12.944607
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

In the shot noise limited case C/N-ratios of more than 60 dB should be achievable with MO-layers available today. Light ellipticity due to substrate birefringence and phase retardation in the optics reduces the C/N-ratio in practice drastically. With optimized optical set-ups C/N-ratios of 50-54 dB were realized with PC-disks. Local variations of substrate birefringence causes also specific hard errors characterized by peak error amplitudes much higher than the MO-signal. Such errors affect the design of the electronics of the read channel which is demonstrated by a Byte error analysis.

Citation Download Citation

M. Keppler and G. Goldmann "Analysis Of Magneto-Optic Media For Optical Disk Drives", Proc. SPIE 0899, Optical Storage Technology and Applications, (2 June 1988); https://doi.org/10.1117/12.944607

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