56 Gbit/s/λ PAM-4 IM/DD Transmission over 120 km SSMF at O-band Using Cascaded Semiconductor Optical Amplifiers for Data Center Interconnects

Zhang, Jiao; Zhou, Wen; Xiao, Jiangnan; Yu, Jianjun; Zhu, Min; Lei, Mingzheng; Cai, Yuancheng; Zou, Yucong; Zhou, Qingyi; Xu, Wei; Wang, Jikuan

doi:10.1364/acpc.2020.t3b.2

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…The research on optical code division multiple access communication started relatively late in China, at present, it focuses on the research of high-speed data transmission in O-band. In 2020, Southeast University and Fudan University jointly published a feasibility study on the transmission of 56 Gbit/s/λ PAM-4(four-stage pulse amplitude modulation) intensity modulated/direct detection (IM/DD) signals in 120 km standard single-mode fiber (SSMF) using a series semiconductor optical amplifier (SOA) in O-band [15] ,the solution can provide data rates up to 56 Gbit/s/λ, meet the 400G Ethernet standard, suitable for high-speed interconnection between large-scale data centers [15] .In 2021, Sun Yat-sen University studied the implementation of low-cost 100Gb/s/λ PAM-4(four-stage pulse amplitude modulation) signal transmission in a 40km interconnected data center using a 4bit resolution digital to analog converter (DAC) in O-band, the scheme simplifies the complexity of the traditional PAM-4 system and greatly reduces the cost [16] .At present, in the optical code division multiple access communication security, stability and reliability, the current results are still scarce, need to be further in-depth and systematic research.…”

Section: Technology Trend 21 Comparative Analysis Of Techniquesmentioning

confidence: 99%

Brief analysis on the development of physical security technology in optical network

DU,

Li,

Wang

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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Optical network has the characteristics of high speed, large capacity, long distance, and no electromagnetic interference. It is widely used in global information network. More than 90% of the world's information is transmitted through optical network, and has become an important strategic infrastructure of modern information society. Optical network physical layer security is one of the important indicators of optical network communication quality. It represents the ability of the optical network physical layer information to resist human interception and attacks. This paper summarizes the development of physical layer security technology of optical network, including physical layer security system of optical network, optical information protection and optical layer firewall, analyzes the development trend of the technology, and puts forward some suggestions on the development of physical layer security technology of optical network from the perspective of long-term development strategy and recent development focus.

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Section: Technology Trend 21 Comparative Analysis Of Techniquesmentioning

confidence: 99%

Brief analysis on the development of physical security technology in optical network

DU,

Li,

Wang

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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“…This is the first study to verify the feasibility of cascaded SOAs based on PAM-4 signals. 5 Xiaodan Pang et al demonstrate 200 Gbps short-reach transmissions with PAM-4 and DMT signals, which shows the system requirements in terms of device characteristics and DSP performance. They expect high-speed IM/DD systems will remain advantageous in terms of system cost, power consumption, and footprint for short-reach applications in the short-to mid-term perspective.…”

Section: Introductionmentioning

confidence: 99%

An investigation on digital signal processing in pulse amplitude modulation transmission system

Liu

2022

Third International Conference on Computer Communication and Network Security (CCNS 2022)

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With the development of the global Internet industry, the demand for the transmission capacity of communication system is increasing rapidly. Optical fiber has become the main transmission media in communication systems because of its unique advantages, such as large bandwidth and low loss. It is necessary to construct large capacity optical communication systems to satisfy the capacity requirements. In this paper, the overall architecture for optical short-reach pulse amplitude modulation (PAM) transmission system is analysed. Then the signal damage factors and corresponding compensation schemes based on digital signal processing (DSP) are studied. The different implementation schemes for clock recovery and channel equalization are described and compared in detail. Finally, the challenges and prospects of DSP technology in short-reach PAM transmission system are discussed.

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“…R ECENT research shows that semiconductor optical amplifiers (SOAs) could be an alternative solution for optical amplification in future optical networks [1], [2]. In addition to the amplification of optical signals, SOAs are also used in optical switching and optical signal processing [3], [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Towards Cryophotonics: Experimental Characterization of SOA at Cryogenic Temperatures

et al. 2023

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We present an experimental system study of the influence of cryogenic temperatures on the performance of a commercial Semiconductor Optical Amplifier (SOA) over the range 240 K -70 K. Significant performance improvements were observed when the SOA is in cryogenic conditions. At 70 K and 100 mA we were able to measure a gain as high as 52 dB. At 240 K, only 50 mA of input current are necessary to reach a gain of 37 dB, and a noise figure of 3.8 dB, close to the theoretical limit. The SOA efficiency at power saturation, rises from 2.2% at ambient temperature up to 41% at 100 mA and 120 K.

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56 Gbit/s/λ PAM-4 IM/DD Transmission over 120 km SSMF at O-band Using Cascaded Semiconductor Optical Amplifiers for Data Center Interconnects

Abstract: We experimentally demonstrated the first 56 Gbit/s/λ PAM-4 IM/DD system transmission over 120 km SSMF at O-band assisted by cascaded SOAs with the bandwidth-limited optics and simple DSP for high-speed DCI in metro-access networks.

Cited by 4 publications

References 7 publications

Brief analysis on the development of physical security technology in optical network

Brief analysis on the development of physical security technology in optical network

An investigation on digital signal processing in pulse amplitude modulation transmission system

Towards Cryophotonics: Experimental Characterization of SOA at Cryogenic Temperatures

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