Microring fault-resilient photonic network-on-chip for reliable high-performance many-core systems

Meyer, Max; Okuyama, Yuichi; Abdallah, Abderazek Ben

doi:10.1007/s11227-016-1846-0

Cited by 10 publications

(5 citation statements)

References 40 publications

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“…One disadvantage of this solution is that it often reroutes traffic in the same way that it induces traffic in one place, while ignoring the problematic routers entirely. The authors in [17,29] suggested a fault-tolerant 3D ONoC with a smaller number of redundant MRs in very important paths. Furthermore, in [5,23], the authors created a highly stable OR system for PNoCs.…”

Section: Related Workmentioning

confidence: 99%

“…They also reported that their FTRA-NR faulttolerant node reuse algorithm would find the best restore route within each faulty OR. Although both of the designs in [23,29] increase the number of MRs for reliability purposes, they cause extra contention and insertion loss, since they use more resources (e.g., MRs) to reroute faulty signals in many cases. Similarly, the authors in [30] proposed a framework to construct fault-tolerant optical routers by using redundant MRs to provide extra paths.…”

Section: Related Workmentioning

confidence: 99%

“…To evaluate the performance of our architecture, we implement the reliable ring waveguide into several nonreliable optical routers proposed in [31,[33][34][35][36][37][38]; two of them are presented in Figure 5, and we compare them with 7 × 7 and 5 × 5 FTTDOR proposed in [29] and the NRFT optical router in [23] and some other fault-tolerant optical routers presented in [30]. Wireless Communications and Mobile Computing Table 2 compares the features of the proposed faulttolerant scheme compared with some previously proposed fault-tolerant optical routers for different sizes.…”

Section: Performance Evaluation and Analysismentioning

confidence: 99%

“…We here evaluate more optical routers using RRW compared to others proposed in [23,29,30 10 Wireless Communications and Mobile Computing the same method as [40]. We evaluate the insertion loss (IL) of the other optical routers in Figure 5 and show the worstcase IL in both the default and the backup paths.…”

Section: Insertion Lossmentioning

confidence: 99%

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Universal Method for Constructing Fault‐Tolerant Optical Routers Using RRW

Fadhel

Huang

2021

Wireless Communications and Mobile Computing

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High-speed data transmission enabled by photonic network-on-chip (PNoC) has been regarded as a significant technology to overcome the power and bandwidth constraints of electrical network-on-Chip (ENoC). This has given rise to an exciting new research area, which has piqued the public’s attention. Current on-chip architectures cannot guarantee the reliability of PNoC, due to component failures or breakdowns occurring, mainly, in active components such as optical routers (ORs). When such faults manifest, the optical router will not function properly, and the whole network will ultimately collapse. Moreover, essential phenomena such as insertion loss, crosstalk noise, and optical signal-to-noise ratio (OSNR) must be considered to provide fault-tolerant PNoC architectures with low-power consumption. The main purpose of this manuscript is to improve the reliability of PNoCs without exposing the network to further blocking or contention by taking the effect of backup paths on signals sent over the default paths into consideration. Thus, we propose a universal method that can be applied to any optical router in order to increase the reliability by using a reliable ring waveguide (RRW) to provide backup paths for each transmitted signal within the same router, without the need to change the route of the signal within the network. Moreover, we proposed a simultaneous transmission probability analysis for optical routers to show the feasibility of this proposed method. This probability analyzes all the possible signals that can be transmitted at the same time within the default and the backup paths of the router. Our research work shows that the simultaneous transmission probability is improved by 10% to 46% compared to other fault-tolerant optical routers. Furthermore, the worst-case insertion loss of our scheme can be reduced by 46.34% compared to others. The worst-case crosstalk noise is also reduced by 24.55%, at least, for the default path and 15.7%, at least, for the backup path. Finally, in the network level, the OSNR is increased by an average of 68.5% for the default path and an average of 15.9% for the backup path, for different sizes of the network.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Performance Evaluation and Analysismentioning

confidence: 99%

Section: Insertion Lossmentioning

confidence: 99%

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Universal Method for Constructing Fault‐Tolerant Optical Routers Using RRW

Fadhel

Huang

2021

Wireless Communications and Mobile Computing

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“…Optical networks on chip (ONoC) exploits the feature of wavelength division multiplexing (WDM) to deliver reduced communication latency, high communication throughput and lower power consumption [3,4,5,6]. An optical router is an essential component of ONoC responsible for data transfer among different cores in manycore processors [7].…”

Section: Introductionmentioning

confidence: 99%

RoR: A low insertion loss design of rearrangeable hybrid photonic-plasmonic 6 × 6 non-blocking router for ONoCs

Yahya

Gao

et al. 2019

IEICE Electron. Express

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Optical networks on chip (ONoC) delivers a promising alternative to meet growing needs of higher bandwidth and low power consumption in manycore processors. Optical routers are the key element in ONoCs that significantly affect the performance of overall network. In this letter, we propose a rearrangeable non-blocking 6 × 6 router (RoR) constructed with 2 × 2 hybrid photonic-plasmonic switching (HPPS) elements. Router architectures with 15 HPPS elements and an optimized design using reduced HPPS elements are presented and analyzed. In optimized form, proposed design consumes only 12 HPPS elements which results in low insertion loss and crosstalk noise in comparison to the unoptimized architecture. We observe up to 50% reduction in switching elements count in comparison to other router architecture of same radix.

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