Performance Analysis of Scalable Optical Circuit Switch Employing Fast-Tunable AMZI Filters for Coherent Detection

Matsumoto, Ryosuke; Konoike, Ryotaro; Matsuura, Hiroyuki; Suzuki, Keijiro; Inoue, Takashi; Ikeda, Kazuhiro; Namiki, Shu; Sato, Ken-ichi

doi:10.1109/jlt.2022.3200722

Cited by 4 publications

(1 citation statement)

References 51 publications

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“…This architecture calculates the wavelength without level extraction of the packet. According to the results mentioned in reference [13][14], the packet latency of PODCA is below 9 μs with respect to other existing passive optical DCN architecture [DOS, LIONS]. The main disadvantage of PODCA architecture is low throughput w.r.t DOS and LIONS architecture.…”

Section: Introductionmentioning

confidence: 95%

Re-routable and Low-latency All Optical Switching Algorithm for Next Generation DCN

2023

IJFMR

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Digital infrastructure is now indispensable to the function of society and quality of life of the citizen. All over the world there is leveraging of digital infrastructure that comprises use of data, computerized devices, methods and systems. During COVID-19 pandemic it comes more prominently in front. India being the most popular and populated country in the world, comprises nearly half billion internet users expected to transform the digital ecosystem. With the increasing demand of smartphone application, online activities gigantic amount of data has been generated, so evolution and development of data centers be the high importance not only for India but as well as for the world. Thus, it is the need to promote and create robust data center network infrastructure that supports emerging technologies such as 5G, IoT, AI, machine learning, adaptive manufacturing, smart agriculture, and automation and so on. In this paper we propose an all Optical re-routable, low latency Data Center Network (DCN) architecture using Passive Optical Datacenter Switch (PODS). The PODS consists of an Arrayed Waveguide Grating Router (AWGR) in association with a controller unit. An efficient wavelength assignment algorithm is integrated in PODS, to reroute the packet for congestion avoidance and packet loss.. This feature makes the DCN architecture more scalable, proficient with high throughput, low latency, power efficient under high traffic and bursty traffic conditions. The performance of the proposed PODS-based DCN is compared with existing passive optical DCN architectures PODCA and finds improved characteristics in terms of delay, throughput and blocking probability. Simulation of the framework is done in Python platform and executed on google COLAB in the Windows environment and the result shows 46.3% improvement in latency and throughput in terms of 90% network load compared with PODCA architecture.

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Section: Introductionmentioning

confidence: 95%

Re-routable and Low-latency All Optical Switching Algorithm for Next Generation DCN

2023

IJFMR

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7424 × 7424 Optical Circuit Switch With 1.4 μs Switching Time Enabled by Silicon-Photonic 64-Port Space Switches and Burst-Mode Coherent Receivers

Matsumoto

Konoike

Matsuura

et al. 2024

J. Lightwave Technol.

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Optical switching will innovate intra data center networks [Invited Tutorial]

Sato¹

2023

J. Opt. Commun. Netw.

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Reflecting the recent slow-down in Moore’s law and the proliferation of artificial intelligence/machine learning workloads, the performance and energy consumption of networks are becoming barriers in high-performance computing (HPC) and data centers. Optical switches are expected to break these barriers, and indeed their introduction has recently commenced in data centers. This paper discusses how optical switching technologies can innovate future intra data center networks. Hyperscale data centers are much bigger in scale, and network requirements are slightly different from those of HPC. This paper focus on data center networks, since the impact of optical technologies will be more significant in data centers than in HPC. In addition to the scale issue, important metrics to be considered for network design are traffic characteristics and latency, both of which are highlighted in this paper. For hybrid (electrical packet and optical circuit) switching networks, the target latency for the optical circuit switch network (connection setup/teardown time) is shown to be around 10 µs, and the needed technologies are clarified and verified by experiments. The optical switch can simplify the present multi-tier switching network above tier-1 switches into a single tier configuration, which is possible with the development of efficient large port count optical switches. Among the different switching architectures, combining the different dimensions of space and wavelength is shown to be one of the best solutions. Fast switching needs fast device response time. Si photonics devices using Mach–Zehnder interferometers or ring-resonator-based switches and tunable filters are the most promising candidates; they offer cost-effective mass-production and fast operation and so are excellent candidates for the optical switches envisaged. Another critical technology to maximize the benefits of optical switches is a simple and low-latency control mechanism. Different approaches have been suggested as summarized in this work. Among them, harnessing optical switch parallelism is a unique technique that matches recent advances in electrical switch chips. A fast control network is realized by using a fully decentralized and asynchronous control mechanism. A hyperscale data center offers a wide variety of services, and no one system fits all needs. Optimization of parameters is an important task for maximizing the impact of optical switching in different kinds of data centers.

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Performance Analysis of Scalable Optical Circuit Switch Employing Fast-Tunable AMZI Filters for Coherent Detection

Cited by 4 publications

References 51 publications

Re-routable and Low-latency All Optical Switching Algorithm for Next Generation DCN

Re-routable and Low-latency All Optical Switching Algorithm for Next Generation DCN

7424 × 7424 Optical Circuit Switch With 1.4 μs Switching Time Enabled by Silicon-Photonic 64-Port Space Switches and Burst-Mode Coherent Receivers

Optical switching will innovate intra data center networks [Invited Tutorial]

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