In this letter, we demonstrate error-free operation of a 12-fiber ×4-wavelength ×5.21-Gb/s parallel-wavelength-division-multiplexed (PWDM) optical link. The 250-Gb/s transmitter and receiver assemblies each have a 5×8-mm footprint and consume a combined power of 1.5 W. To our knowledge, this is the first publication of a fully functional PWDM optical interconnect as well as the highest demonstrated bandwidth per unit area and bandwidth per unit power consumption for any multiple-channel fiber-optic interconnect. This technology is intended for short-distance high-bandwidth-density applications such as multiprocessor computer backplanes.
"Some of the more remarkable achievements in this field for optical interconnects are the advent of MEMS-based two-dimensional (2-D) tunable vertical-cavity surface-emitting lasers (VCSEL) arrays , and the arrayed-waveguide-grating (AWG)-based tunable fiber lasers  for the high-end telecom market. The broadcast function can be implemented by a star coupler or beam splitting diffractive optical elements (DOEs) in free-space . Wavelength selection can be obtained with selective resonant cavity photodetectors (RCPDs) , , tunable optical filters , AWGs , passive polarization sensitive DOEs ,  or passive wavelength sensitive DOEs . "
[Show abstract][Hide abstract] ABSTRACT: Recent advances in the development of optical interconnect technologies suggest the possible emergence of optical interconnects within distributed shared memory (DSM) machines in the near future. Moreover, current developments in wavelength tunable devices could soon allow for the fabrication of low-cost, adaptable interconnection networks with varying switching times. It is the objective of this paper to investigate whether such reconfigurable networks can boost the performance of the DSM machines further. In this respect, we propose a system concept of a passive optical broadcasting component to be used as the scalable key element in such a reconfigurable network. We briefly discuss the necessary opto-electronic components and the limitations they impose on network performance. We show through detailed full-system simulations of benchmark executions, that the proposed system architecture can provide a significant speedup for shared-memory machines, even when taking into account the limitations imposed by the opto-electronics and the optical broadcast component
IEEE Journal of Selected Topics in Quantum Electronics 08/2006; 12(4-12):828 - 837. DOI:10.1109/JSTQE.2006.876158 · 2.83 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Nowadays, multiprocessor systems are reaching their limits due to the large interconnection bottleneck between chips, but recent advances in the development of optical interconnect technologies can allow the use of low cost, scalable and reconfigurable networks to resolve the problem. In this paper, we make an initial evaluation of the performance gain on general network reconfigurability. In a next stage, we propose an optical system concept and describe a passive optical broadcasting component to be used as the key element in a broadcast-and-select reconfigurable network. We also discuss the available opto-electronic components and the restrictions they impose on network performance. Through detailed simulations of benchmark executions, we show that the proposed system architecture can provide a significant speedup for shared-memory machines, even when taking into account the limitations imposed by the opto-electronics and the presented optical broadcast component.
Proceedings of SPIE - The International Society for Optical Engineering 01/2006; 6185. DOI:10.1117/12.662882 · 0.20 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Research and development on parallel-optical interconnects has continued for over a decade. A review is given of the applications of parallel optics, existing 12×2.5-Gbit/s parallel optics, recent 12×10-Gbit/s parallel optics, and next-generation optical interconnects.
Optical Fiber Communication Conference, 2005. Technical Digest. OFC/NFOEC; 04/2005
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