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High-contrast waveguides in crystalline potassium double tungstates pave the road towards compact and efficient on-chip amplifiers. In this work, the design and fabrication of erbium doped high contrast potassium double tungstates waveguides will be described.
We demonstrate recent advances in the area of optical RAM-based cache memory technology and in the area of optical interconnect technologies for allowing the deployment of a disintegrated computational setting where off-chip optical cache modules can be connected to cache-light Chip Multiprocessors and DRAM modules. We report on recent experimental results obtained within the FP7 project RAMPLAS and...
In this article, we review our recent work in WDM-enabled optical RAM bank architectures and their optical all-passive peripheral modules that form a complete 16GHz optical cache memory physical layer design for Chip Multiprocessor configurations and we report on recently integrated InP-optical memory cells as the fundamental building blocks.
The rapid increase in processor throughput is currently exceeding the electronic memory speed progress, forming the well-known “Memory Wall” problem, forcing current Chip Multiprocessor (CMP) configurations to consume more than 50% of the chip real-estate for caching purposes. In that perspective, optical RAMs storing and retrieving information in the form of light with ps-scale memory access times...
Optical RAM appears to be the alternative approach towards overcoming the “Memory Wall” of electronics, suggesting the use of light in RAM cell mechanisms to enable memory access times in the psec-regime. In this paper we present our recent work on optical RAM cell configurations relying on SOA-based switching and latching elements. We review both their experimental and theoretical framework and discuss...
The authors demonstrate a novel all-optical T-flip-flop (TFF) layout utilizing a single optical latching element that comprises an integrated semiconductor optical amplifier and Mach–Zehnder inteferometer and a feedback loop. Experimental proof-of-concept verification is presented at 8 Mb/s using off-the-shelf bulk components and a fiber-based feedback implementation. The proposed TFF architecture...
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