Throughput-Enhanced Multi-Wavelength Guidedwave Optical Interconnects for High-Density Holographic Memory

New developments in the three-dimensional memory devices have created demand for high-speed and large-volume data handling interconnects between memory devices and processing elements. Electrical interconnects fail to keep up with this new demand due to their basic limitations. Optical interconnects and devices inherently offer large bandwidth and hence high-speed and ultra-high-density data capacities. Radiant Research, Inc., proposes to construct a parallel-to-serial interconnect module using guided-wave technology in conjunction with VCSELs, Photodiodes, wavelength division demultiplexing (WDDM) device and multimode fibers. Employment of the WDDM device significantly increases the aggregate bandwidth well above 10 Gb/sec, while minimizing the latency of data transfer. Inherently parallel memory using serial optical network can be realized without compromising the performance. 3D-holographic memory system provided by Holoplex (HM-100) will be employed for the system demonstration. Experimental result shows that each WDDM wavelength channel can provide 2500 Gb/sec in a parallel-to-serial format. As a result, the projected target (Fig.2) will be achieved. Important benefits of this approach are significantly improved device performance in the context of data transfer for 3D memory, relaxed fabrication tolerance, and reduced cost. The proposed technology has tremendous commercial value in the optoelectronic interconnect industry.