Signal Non-Linearities And Their Effect Upon The Data Recovery Process In High-Density Optical Storage

抄録

To predict the performance of optical read channels readout waveforms generated using linear superposition techniques are often used. The readout waveform is, however, often degraded by non-linear components particularly at high storage densities. In this paper the origins of such non-linearities are explained and their effects on read channel performance investigated. It is found that channel bit error rate can be properly optimised only if the signal non-linearity is taken into account.