14 January 1987 Signal-To-Noise Ratio (SNR) For Reliable Data Recording
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Abstract
Due to the nonlinear nature of the thermal optical recording process and the inherent difficulty in tracking and maintaining focus of a submicron-sized light spot, peak-shift values of 40 to 50% are likely to occur during the use of an optical data storage system. Wideband SNR of 30 dB or more will, therefore, be required to attain acceptable phase margin (i.e., reliable operation). Similarly, magnetic recorders working at high linear density will experience peak-shift values of 20 to 30%; wideband SNR from 23 to 29 dB will be required in those machines, depending upon whether or not error correction coding (ECC) is employed.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dennis G. Howe, Dennis G. Howe, } "Signal-To-Noise Ratio (SNR) For Reliable Data Recording", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); doi: 10.1117/12.936846; https://doi.org/10.1117/12.936846
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