With the rapidly increasing aggregate bandwidth requirements of data centers there is a growing interest in insertion optically interconnected networks with high-radix transparent optical switch fabrics. Silicon photonics particularly promising and applicable technology due to its small footprint, CMOS compatibility, high density, potential for nanosecond scale dynamic connectivity. In this paper we analyze feasibility building silicon photonic microring based fabrics center interconnection...

With the extraordinary growth in parallelism at all system scales driven by multicore architectures, computing performance is increasingly determined how efficiently high-bandwidth data communicated among numerous compute resources. High-performance systems are especially challenged growing energy costs dominated movement. As future aim to realize Exascale regime-surpassing 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">18</sup> operations...

The paper presents a comprehensive physical layer design and modeling platform for silicon photonic interconnects. is based on explicit closed-form expressions optical power penalties, derived both signal-dependent signal-independent noise contexts. Our models agree well with reported experimental measurements. We show how the approach used space exploration of links can be leveraged to optimize wavelength-division multiplexed (WDM) capacity, evaluate scalability, study sensitivity system...

Abstract Integrated photonics offers the possibility of compact, low energy, bandwidth-dense interconnects for large port count spatial optical switches, facilitating flexible and energy efficient data movement in future communications systems. To achieve widespread adoption, intimate integration with electronics has to be possible, requiring switch design using standard microelectronic foundry processes available devices. We report on feasibility a fabric comprised ubiquitous silicon...

Realizing small-footprint and energy-efficient optical switching fabrics is of crucial importance to solve the data movement challenges faced by interconnection networks. This letter demonstrates silicon photonic 2 × full crossbar functionality based on a single microring. The ultracompact device shown successfully switch channels from two input ports simultaneously. Data in both multiple same wavelength experiments are measured be error-free. Simulation shows that optimizing some microring...

The article describes an experimentally validated approach for optimizing wavelength-selective microring filters based on optical signals power penalties. methodology is used to analyze the performance of WDM links various bit rates and channel-spacing.

Silicon photonic interconnects have been proposed as a solution to address chip I/O communication bottlenecks in multicore architectures. In this paper, we perform comprehensive design exploration of inter-chip links and networking Because the energy efficiencies such architectures shown be highly sensitive link utilization, our covers designs where sharing occurs. By means shared buses silicon switches, utilizations can improved. To conduct exploration, introduce modeling methodology that...

The dispersion relations for surface plasmon polaritons propagating in the Voigt geometry a metal-insulator-metal waveguide with magneto-optically active dielectric medium are derived. symmetry between upper and lower interfaces is broken by introduction of magnetic field; balance field distributions on two can be controlled applied field. This control illustrated finite-element method numerical simulations around point dipole placed center short waveguide; it shown that both total emission...

In this paper we present a dynamic bandwidth allocation algorithm for EPON, which makes use of the Multipoint Control Protocol (MPCP) with threshold reporting and inter-and intra-ONU priority scheduling.Three varieties are compared, by means detailed simulation program, regarding average packet delay several priorities, variation constant bit rate (CBR) traffic utilization.We show that introducing specific scheduling algorithm, takes reported values into account, can be fully...

Silicon Photonics is emerging as a key technology for high-performance computing interconnects. Yet few tools are available to investigate how best leverage this in current or future computer architectures and, furthermore, will impact real application workloads. In paper, we present multi-layer simulation and modeling software solution -- PhoenixSim. PhoenixSim enables integrated interactive design space exploration over the physical, networking layers. report its general organization...

High radix switches are essential for reducing network latency. A possible way to realize them is by using silicon photonic microrings which have been demonstrated small foot prints and very fast switching times. By cascading multiple 2 high ones can be achieved. However, the scalability of such microring-resonator based switch fabrics limited optical power loss crosstalk. In this work we employ detailed physical layer device models determine switches. Our results show that a with low cross...

Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text K. Bergman, S. Rumley, N. Ophir, D. Nikolova, R. Hendry, Q. Li, Padmara, Wen, and L. Zhu, "Silicon Photonics for Exascale Systems," in Optical Fiber Communication Conference, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper M3E.1. Export BibTex Endnote (RIS) HTML Plain alert Save article

The power penalty due to insertion loss and intra-channel cross talk of multistage silicon photonic microring switches is calculated using the transfer matrix method. results indicate feasibility high-radix switches.

Clusters of octahedral ${\mathrm{AF}}_{6}$ molecules transform when cooled from a body-centered-cubic, orientationally disordered phase to monoclinic, ordered in two-step process. Recently, the higher-temperature transition has been shown be finite-system counterpart first-order transition. Here, with help symmetry-adapted rotator functions, we show that lower-temperature is continuous. With our analytical model, predict temperature 27 K for this transition, 59-molecule cluster...

In this article we present a novel packet scheduling algorithm LBFS-DRR, which combines features from the Last-Come First-Served discipline and Deficit Round Robin (DRR) algorithm. comparison with DRR it provides lower average delay, while preserving advantageous feature like O(1) complexity, fairness, bandwidth guarantee. The mean delay is realized by giving service in round first to flows transmitting bellow their (weighted) fair share. exploits high variability typical user traffic...

Magnetoplasmonics merges plasmonics and magnetism, providing ways to control the surface plasmon propagation but also probe magnetism of materials. We present an analysis optical properties magnetic cavity consisting a dielectric between two sheets non-magnetic metal. find that field distribution plasmonic modes inside is strongly dependent on magnetisation. The very different distributions modes, depending magnetisation direction dielectric, should allow interesting possibilities for future...

The Fast Fourier Transform (FFT) is an efficient algorithm widely used in digital signal processing to transform between the time domain and frequency domain. For fixed-point VLSI implementations, dynamic range growth inevitably occurs at each stage of FFT operation. However, current methods either waste bitwidth or consume excessive resources when dealing with issue. To address this issue, we propose scaling method called Scaling Information Propagation (SIP) alleviate problem growth, which...

We propose highly scalable, low footprint optical network elements based on silicon photonic microring resonators with nanosecond switching times.