Reconfigurable optical interconnections for parallel computing

McArdle, Neil; Naruse, Makoto; Toyoda, Haruyoshi; Kobayashi, Yuji; Ishikawa, Masatoshi

doi:10.1109/5.867696

Cited by 29 publications

(7 citation statements)

References 17 publications

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“…The high aggregate bandwidth and channel density achievable by optical interconnects (OIs) make them an ideal replacement for electrical interconnection schemes. Optical interconnects potentially have low power consumption, and can facilitate the development of novel designs for VLSI architectures, including heterogeneous multiprocessor systems and highly parallel computing systems [3][4][5]. Recent developments in the integration of Vertical-Cavity Surface-Emitting Laser (VCSEL) arrays and photodetector arrays with CMOS electronic circuitry have increased the practical potential of optical interconnects [6,7].…”

Section: Introductionmentioning

confidence: 99%

Minimising crosstalk in microchannel free-space optical interconnects with the presence of higher order modes

2007

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We investigate the combined effect of the diffraction-caused crosstalk noise (DCCN) and the stray-light crosstalk noise (SLCN) on the performance of FSOI system. A numerical simulator was employed in this study to investigate OI channel design. We determine that there exists an optimal focal length, which maximises the signal-to-noise ratio (SNR) by minimising the combined effects of DCCN and SLCN. For the fundamental mode, the optimal focal length is approximately 750µm; for both LG 01 and LG 10 modes, the optimal focal length occurs between f = 650 µm and f = 700 µm, depending on the interconnection distance and array pitch.

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Section: Introductionmentioning

confidence: 99%

Minimising crosstalk in microchannel free-space optical interconnects with the presence of higher order modes

2007

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“…The high aggregate bandwidth and channel density achievable by optical interconnects (OIs) make them ideal replacement for electrical interconnection schemes. Optical interconnects potentially have low power consumption, and can facilitate the development of radically novel designs for VLSI architectures including heterogeneous multiprocessor systems, and highly parallel computing systems [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Analysis of optical channel cross talk for free-space optical interconnects in the presence of higher-order transverse modes

et al. 2005

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-We analyse the effect of crosstalk noise on the performance of free space optical interconnects (FSOIs). In addition to "diffraction-caused" crosstalk, we consider the effect of "stray-light" crosstalk noise which, to the best of our knowledge, has not been addressed previously. Simulations were performed on a microlens based FSOI system using the modal composition and beam profiles experimentally extracted from a commercial Vertical-Cavity Surface-Emitting Laser. We demonstrate that this crosstalk noise introduces significant degradation to interconnect performance, particularly for multi-transverse mode laser sources. A simple behavioural model is also developed which accurately approximates the crosstalk noise for a range of optical sources and interconnect configurations.

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“…The high aggregate bandwidth and channel density achievable by optical interconnects (OIs) make them an ideal replacement for electrical interconnection schemes. Optical interconnects potentially have low power consumption, and can facilitate the development of radically novel designs for VLSI architectures including heterogeneous multiprocessor systems and highly parallel computing systems [3][4][5]. Recent developments in the integration of Vertical-Cavity Surface-Emitting Laser (VCSEL) arrays and photodetector arrays with CMOS electronic circuitry have increased the practical potential of optical interconnects [6,7].…”

Section: Introductionmentioning

confidence: 99%

Novel array geometries for free-space optical interconnects with improved signal-to-noise ratio

et al. 2005

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We investigate the effect of transmitter and receiver array configurations on the stray-light and diffraction-caused crosstalk in free-space optical interconnects. The optical system simulation software (Code V) is used to simulate both the stray-light and diffraction-caused crosstalk. Experimentally measured, spectrally-resolved, near-field images of VCSEL higher order modes were used as extended sources in our simulation model. Our results show that by changing the square lattice geometry to a hexagonal configuration, we obtain the reduction in the stray-light crosstalk of up to 9 dB and an overall signal-to-noise ratio improvement of 3 dB.

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Reconfigurable optical interconnections for parallel computing

Cited by 29 publications

References 17 publications

Minimising crosstalk in microchannel free-space optical interconnects with the presence of higher order modes

Minimising crosstalk in microchannel free-space optical interconnects with the presence of higher order modes

Analysis of optical channel cross talk for free-space optical interconnects in the presence of higher-order transverse modes

Novel array geometries for free-space optical interconnects with improved signal-to-noise ratio

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