Architectures and routing schemes for optical network-on-chips

Zhang, Lei; Yang, Mei; Jiang, Yingtao; Regentova, Emma E.

doi:10.1016/j.compeleceng.2008.09.010

Cited by 21 publications

(13 citation statements)

References 21 publications

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“…In this section, we analyze and compare the number of MRRs used and power loss of the 4×4 GWOR with that of the existing router designs including the matrix-based crossbar [15], the reduced crossbar [14], hitless router [17], WRON [18] [19], and λ-router [3]. Tab.…”

Section: Comparison and Analysismentioning

confidence: 99%

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On a Scalable, Non-Blocking Optical Router for Photonic Networks-on-Chip Designs

Tan

Yang

Zhang

et al. 2011

2011 Symposium on Photonics and Optoelectronics (SOPO)

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Abstract-Photonic Networks-on-Chip (NoC) is considered as a promising candidate to interconnect a large number of processing cores. The heart of a photonic NoC is the onchip photonic interconnection network which is composed of silicon waveguides and optical routers. In this paper, we propose a scalable and non-blocking passive optical router design using micro-ring resonators (MRRs), namely the generic wavelength-routed optical router (GWOR). We first introduce a 4×4 GWOR router structure and then show how to construct larger size GWORs using 4×4 GWOR as the basic building block. The wavelength assignment schemes for any size GWORs are also derived. For N×N GWOR, N-1 input wavelengths are needed and N-2 different types of MRRs are used. The analysis shows that 4x4 GWOR uses the least number of MMRs and has the least power loss compared with existing router designs.

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Section: Comparison and Analysismentioning

confidence: 99%

“…Hence, they do not require extra tuning and control circuits as active routers. Existing non-blocking passive routers include the λ-router constructed by cascading 2×2 optical switches [3], the WRON router that has similar structure as λ-router [18] [19], and the 5×5 passive wavelength-router [8].…”

Section: Introductionmentioning

confidence: 99%

On a Scalable, Non-Blocking Optical Router for Photonic Networks-on-Chip Designs

Tan

Yang

Zhang

et al. 2011

2011 Symposium on Photonics and Optoelectronics (SOPO)

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“…But this router architecture is only applicable to networks with even-numbered input/output ports. This parity problem is later solved by a more general WRON router [26], [27]. Another passive optical router is the oblivious bidirectional 5 5 cross-grid wavelength-router presented in [9], which is compact in size, but the high design complexity makes it difficult to be extended to construct a larger sized network.…”

Section: Related Workmentioning

confidence: 99%

A Generic Optical Router Design for Photonic Network-on-Chips

Tan

Yang

Zhang

et al. 2012

J. Lightwave Technol.

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Abstract-Photonic network-on-chip (NoC) architectures are emerging as a new paradigm to interconnect a large number of processing cores at chip level, meeting the pressing demand for extremely high bandwidth and low power consumption. Optical routers, which are typically composed of silicon waveguides and optical switches, play a key role in an on-chip photonic interconnection network. In this paper, we propose a micro-ring-resonator (MRR)-based, scalable, and non-blocking passive optical router design, namely the generic wavelength-routed optical router (GWOR). We first introduce the four 4 4 GWOR router structures and then show how to construct GWORs of larger sizes by using the proposed 4 4 GWORs as the primitive building blocks. The number of MRRs used in the proposed GWOR is the least among the existing passive router designs for the same network size. In addition, we show that the power loss experienced on GWORs is lower than other comparative designs. Furthermore, to improve the bandwidth and fault tolerance capability of the GWORs, the redundant GWOR (RGWOR) structure is presented. RGWOR can provide multiple routing paths between each pair of input-output ports by cascading different types of GWORs.Index Terms-Micro-ring resonator, photonic NoC, optical router.

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“…The structure of OIU is constructed based on the concept of WRON [2]. The routing wavelengths assignment for all channels of I-Node and IINode is shown in Tab.1.…”

Section: Routing Devices Design In Gton-xiimentioning

confidence: 99%