Improving crosstalk resilience with wavelength spacing in photonic crossbar-based network-on-chip architectures

Chittamuru, Sai Vineel Reddy; Pasricha, Sudeep

doi:10.1109/mwscas.2015.7282035

Cited by 16 publications

(11 citation statements)

References 11 publications

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“…In order to explain the variation of execution time and simplify expressions, we illustrate, for some points of 12 λ WA solutions, the number of reserved wavelengths for each communication. For example, [2,8,6,6,4,7] means that for communication c 0 , 2 λ are reserved, for c 1 , 8 λ are reserved and so on. We can observe that energy consumption per bit increases with the number of reserved wavelengths.…”

Section: Resultsmentioning

confidence: 99%

“…However, this tool performs the analyses of power loss and crosstalk noise for single-wavelength ONoCs. Chittamuru et al propose a crosstalk mitigation technique to increase channel spacing between adjacent wavelengths in dense wavelength division multiplexing (DWDM) [7]. However, they improve SNR performance of system by reducing DWDM degree, the WA issue is not considered in this work.…”

Section: Related Workmentioning

confidence: 99%

“…For example, the distinctive properties of photonics component (i.e MR acts as a filter) cause some problems, including undesirable mode coupling between adjacent wavelengths in the photodetector that generate crosstalk noise and impact potentially the Optical NoC [7]. Therefore, the WA methodology specific to ONoC should be studied.…”

Section: Related Workmentioning

confidence: 99%

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Performance and energy aware wavelength allocation on ring-based WDM 3D optical NoC

Luo¹,

El-Antably²,

Pham³

et al. 2017

Design, Automation &Amp; Test in Europe Conference &Amp; Exhibition (DATE), 2017

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Abstract-Optical Network-on-Chip (ONoC) is a promising communication medium for large-scale Multiprocessor System on Chip (MPSoC). ONoC outperforms classical electrical NoC in terms of throughput and latency. The medium can support multiple transactions at the same time on different wavelengths by using Wavelength Division Multiplexing (WDM). Moreover multiple wavelengths can be used as high-bandwidth channel to reduce transmission time. However, multiple signals sharing simultaneously a waveguide can lead to inter-channel crosstalk noise. This problem impacts the Signal to Noise Ratio (SNR) of the optical signal, which leads to an increase in the Bit Error Rate (BER) at the receiver side. In this paper we first formulate the crosstalk noise and execution time models and then propose a Wavelength Allocation (WA) method in a ring-based WDM ONoC allowing to search for performance and energy trade-offs, based on the application constraints. As result, most promising WA solutions are highlighted for a defined application mapping onto 16-core WDM ONoC.

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Section: Resultsmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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Performance and energy aware wavelength allocation on ring-based WDM 3D optical NoC

Luo¹,

El-Antably²,

Pham³

et al. 2017

Design, Automation &Amp; Test in Europe Conference &Amp; Exhibition (DATE), 2017

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show abstract

“…To mitigate the impacts of crosstalk noise in DWDM based PNoCs, two encoding techniques PCTM5B and PCTM6B are presented in [13]. In [9] a technique was proposed to increase channel spacing between adjacent wavelengths in DWDM, to mitigate crosstalk in MR detectors. However, none of these works considers process variations and their impact on crosstalk in DWDM-based PNoCs.…”

Section: Related Workmentioning

confidence: 99%

“…The most intuitive way to counteract PV-induced resonance shifts in MRs is to realign the resonant wavelengths by using localized trimming [9] and thermal tuning [7] mechanisms. The former approach causes the wavelength to shift towards the blue end and the latter towards the red end of the resonance spectrum.…”

Section: Introductionmentioning

confidence: 99%

Process variation aware crosstalk mitigation for DWDM based photonic NoC architectures

Chittamuru

Thakkar

Pasricha

2016

2016 17th International Symposium on Quality Electronic Design (ISQED)

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Photonic network-on-chip (PNoC) architectures are a potential candidate for communication in future chip multiprocessors as they can attain higher bandwidth with lower power dissipation than electrical NoCs. PNoCs typically employ dense wavelength division multiplexing (DWDM) for high bandwidth transfers. Unfortunately, DWDM increases crosstalk noise and decreases optical signal to noise ratio (SNR) in microring resonators (MRs) threatening the reliability of data communication. Additionally, process variations induce variations in the width and thickness of MRs causing shifts in resonance wavelengths of MRs, which further reduces signal integrity, leading to communication errors and bandwidth loss. In this paper, we propose a novel encoding mechanism that intelligently adapts to on-chip process variations, and improves worst-case SNR by reducing crosstalk noise in MRs used within DWDM-based PNoCs. Experimental results on the Corona PNoC architecture indicate that our approach improves worst-case SNR by up to 44.13%. 17th Int'l Symposium on Quality Electronic Design

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Advanced Multicore SoC Interconnects

Abdallah

2017

Advanced Multicore Systems-on-Chip

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Improving crosstalk resilience with wavelength spacing in photonic crossbar-based network-on-chip architectures

Cited by 16 publications

References 11 publications

Performance and energy aware wavelength allocation on ring-based WDM 3D optical NoC

Performance and energy aware wavelength allocation on ring-based WDM 3D optical NoC

Process variation aware crosstalk mitigation for DWDM based photonic NoC architectures

Advanced Multicore SoC Interconnects

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