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We report the experimental demonstration of a photorefractive dynamic holographic memory that has a simple feedback architecture stabilized through a novel spatial sampling technique. By using dynamic copying to compensate for photorefractive decay, this memory provides nondestructive readout, selective erasure and rewriting , and real-time adaptation of(More)
Faster-than-Nyquist (FTN) signal can achieve higher spectral efficiency and capacity than Nyquist signal. For Nyquist signal, the capacity limit was shown in the pioneering work of Shannon. However, different from Nyquist signal, FTN signal has a smaller pulse interval or narrower subcarrier spacing. What is the capacity limit of FTN signal? In this paper,(More)
In this paper, we propose a discrete Hartley transform (DHT)-spread technique for peak-to-average power ratio (PAPR) reduction in a DHT-based asymmetrically clipped optical orthogonal frequency-division multiplexing (ACO-OFDM) system. At the complementary cumulative distribution function of 10 À3 , the PAPR values of our proposed scheme are about 9.7 and(More)
—This paper considers the comparison between optical and electrical interconnect system from a parallel computing performance view. The motivation of the work is based on increasing demand on parallel computing tasks and the rapid development of optical chip-to-chip interconnects techniques. To meet the increasing demand of large-scale parallel or(More)
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