The New Frontiers of 800G High Speed Optical Communications

Routray, Sudhir K.; Javali, Abhishek; Sharma, Laxmi; Gupta, Jagrati; Sahoo, Anindita

doi:10.1109/iceca49313.2020.9297434

Cited by 10 publications

(5 citation statements)

References 11 publications

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“…Although the national standard and the ITU-T stipulates the maximum switching time is 50ms, but in business operations [6], the longer the service interruption time, the greater the loss will be, such as 50ms switching time for 400G communication system, will lose about 2.5GB of data, and this is not counting the loss of other problems caused by service interruption. With the deployment of 800G communication system [7], the 50ms switching time will further expand the loss of data, therefore, how to reduce the protection switching time becomes an important research issue. To address this problem, this paper uses magnetooptical switches as the core devices and FPGAs/CPLDs to implement the control logic and realize automatic protection switching in hardware, reducing the switching time to about 1.5ms, which greatly reduces the loss of the whole system in case of failure.…”

Section: Introductionmentioning

confidence: 99%

Design of high-speed optical protection switch mechanism in optical fiber communication system

Ma,

Zhao

2023

5th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2023)

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In recent years, the speed and capacity of fiber optic communication systems have been greatly improved, but in the event of a failure requiring a switching, the 50ms switching time defined by the International Telecommunication Union Telecommunication Standards Branch (ITU-T) can cause a large amount of service data loss compared to low-speed transmission. Therefore, how to minimize the switching time has also become a key issue in protecting the switching. In this paper, we use a magneto-optical switch (MO-Switch) as the core device for protection switching, and design a state machine using FPGA/CPLD to control and design an automatic protection switching (APS) protocol in hardware to realize a 1+1 unidirectional or bidirectional linear protection switching system. The proposed scheme finally achieves a switching time of about 1.5ms, which achieves a performance improvement of more than 95% compared to the standard 50ms and reduces the loss caused by the failure of high-speed fiber optic communication systems.

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Section: Introductionmentioning

confidence: 99%

Design of high-speed optical protection switch mechanism in optical fiber communication system

Ma,

Zhao

2023

5th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2023)

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“…O paradigma de computac ¸ão em nuvem, com recursos centralizados nas redes de núcleo, tem seguido a tendência de modularizar-se em computac ¸ão de borda e afins, com natureza distribuída ao longo de toda a rede metro e acesso. O resultado dessas novas abordagens é uma maior variedade de densidades e escalas de padrões de interconexões [Kosmatos et al 2023], granularidades de tráfego de dados (1 Gb/s [Shen et al 2018] até 800 Gb/s [Routray et al 2020]), diferentes modos de comunicac ¸ão [Cugini et al 2016] e perfis de tráfego [Uzunidis et al 2018, Streit et al 2021, Braga et al 2021, Kosmatos et al 2023.…”

Section: Introduc ¸ãOunclassified

Política de Roteamento Ciente das Áreas e dos Clusteres em Redes Ópticas Metropolitanas

Sousa

Costa

Drummond

2023

Anais Do XLI Simpósio Brasileiro De Redes De Computadores E Sistemas Distribuídos (SBRC 2023)

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As redes ópticas metropolitanas (ROM)s concentram grande parte do tráfego que vem da internet, assim como agrega todo o tráfego proveniente das redes de acesso. A distribuição desse tráfego na ROM ocorre de diferentes maneiras e em diferentes tipos de áreas, seja em decorrência do padrão de atividades da população ou do horário do dia. Assim, um desequilíbrio do tráfego é percebido ao longo das áreas enquanto muitos recursos permanecem ociosos, aumentando a taxa de bloqueio dos serviços. Este trabalho propõe a utilização de algoritmos de roteamento e alocação de espectro ciente da área e de clusteres de áreas. A solução proposta demonstra o dobro de melhoria dos resultados de bloqueio em comparação com algoritmos agnósticos das áreas.

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“…Recently, there are also many other demonstrations of silicon optical transceivers which are further extending the data transmission speed to more than 400 Gb/s [9][10][11]. Towards 800 G silicon photonic optical modules, there are many viable solutions such as PSM 4 × 200 G, PSM 8 × 100 G, and WDM 8 × 100 G [12][13][14]. There are also a few demonstrations of Terabit/s optical I/O chiplets integrated with multiple wavelength lasers and ASICs [15,16], which show the great potential for large capacity optical communication using the WDM techniques.…”

Section: Introductionmentioning

confidence: 99%

Numerical Demonstration of 800 Gbps WDM Silicon Photonic Transmitter with Sub-Decibel Surface-Normal Optical Interfaces

Zhang

et al. 2022

Micromachines

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We propose and numerically demonstrate an 800 Gbps silicon photonic transmitter with sub-decibel surface-normal optical interfaces. The silicon photonic transmitter is composed of eight silicon Mach–Zehnder optical modulators and an interleaved AMMI WDM device. This WDM device comprises two 1 × 4 angled MMI and a Mach–Zehnder interferometer (MZI) optical interleaver with an apodized bidirectional grating which has about −0.5 dB coupling loss. Both the Mach–Zehnder electro-optical modulators and MZI optical interleaver regard the bidirectional grating coupler as vertical optical coupler and 3-dB power splitter/combiner. By importing the S-parameter matrices of all the components which have been carefully designed in simulation software, the circuit-level model of the optical transmitter can be built up. On this basis, the static and dynamic performance characterization were carried out numerically. For NRZ modulation, the optical transmitter exhibits the overall optical loss of 4.86–6.72 dB for eight wavelength channels. For PAM4 modulation, the optical loss is about 0.5 dB larger than that of NRZ modulation, which varies between 5.38–7.27 dB. From the eye diagram test results, the WDM silicon photonic transmitter can achieve single channel data transmission at 100 Gb/s NRZ data or 50 GBaud/s PAM4 symbol rate with acceptable bit error rate.

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The New Frontiers of 800G High Speed Optical Communications

Cited by 10 publications

References 11 publications

Design of high-speed optical protection switch mechanism in optical fiber communication system

Design of high-speed optical protection switch mechanism in optical fiber communication system

Política de Roteamento Ciente das Áreas e dos Clusteres em Redes Ópticas Metropolitanas

Numerical Demonstration of 800 Gbps WDM Silicon Photonic Transmitter with Sub-Decibel Surface-Normal Optical Interfaces

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