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Achieving a minimum signal-to-noise ratio in angularly multiplexed volume holographic optical data storage systems

We present an integrated analysis of the effects of optical crosstalk and electronic noise on the BER performance of angular and spatially multiplexed volume holographic data storage systems. Our results show that increasing the SLM contrast ratio beyond 30 is of limited benefit in improving the system BER, and that electronic noise in the CCD is the dominant noise source when the signal is not shot noise limited (for ideal holographic materials). In addition, we show that CCD's with 100 or more low noise output channels are needed to achieve a 1 Gbit/sec readout data rate for reasonable preamp data bandwidths of 20 MHz or less.