Symmetric 100-Gb/s TWDM-PON in O-Band Based on 10G-Class Optical Devices Enabled by Dispersion-Supported Equalization

Xue, Lei; Yi, Lilin; Ji, Honglin; Li, Peixuan; Hu, Weisheng

doi:10.1109/jlt.2017.2777498

Cited by 27 publications

(10 citation statements)

References 19 publications

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“…Another limiting factor for the DML-based system is the spectrum broadening, which is mainly due to the inherent chirp effect. Several techniques both in the optical and digital domains can be used to address the chirp effect [42,93].…”

Section: Directly Modulated Lasermentioning

confidence: 99%

A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions

et al. 2021

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This paper reviews recent progress on different high-speed optical short- and medium-reach transmission systems. Furthermore, a comprehensive tutorial on high-performance, low-cost, and advanced optical transceiver (TRx) paradigms is presented. In this context, recent advances in high-performance digital signal processing algorithms and innovative optoelectronic components are extensively discussed. Moreover, based on the growing increase in the dynamic environment and the heterogeneous nature of different applications and services to be supported by the systems, we discuss the reconfigurable and sliceable TRxs that can be employed. The associated technical challenges of various system algorithms are reviewed, and we proffer viable solutions to address them.

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Section: Directly Modulated Lasermentioning

confidence: 99%

A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions

et al. 2021

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“…Besides the bandwidth limitation, another well-known problem with DMLbased system is the DML's inherent chirp effect that broadens the spectrum. Correspondingly, both optical [41], [42] and digital signal processing techniques [43] are proposed to tackle the chirp effect and make a full use of it to enhance transmission performance [44].…”

Section: Broadband Optoelectronic Devices For High-speed Modulationmentioning

confidence: 99%

200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects

Pang

Jacobsen

et al. 2020

J. Lightwave Technol.

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153

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Client-side optics are facing an ever-increasing upgrading pace, driven by upcoming 5G related services and datacenter applications. The demand for a single lane data rate is soon approaching 200 Gbps. To meet such high-speed requirement, all segments of traditional intensity modulation direct detection (IM/DD) technologies are being challenged. The characteristics of electrical and optoelectronic components, and the performance of modulation, coding and digital signal processing (DSP) techniques are being stretched to their limits. In this context, we witnessed technological breakthroughs in several aspects, including development of broadband devices, novel modulation formats and coding, and high-performance DSP algorithms for the past few years. A great momentum has been accumulated to overcome the aforementioned challenges. In this paper, we focus on IM/DD transmissions, and provide an overview of recent research and development efforts on key enabling technologies for 200 Gbps per lane and beyond. Our recent demonstrations of 200 Gbps short-reach transmissions with 4level pulse amplitude modulation (PAM) and discrete multitone signals are also presented as examples to show the system requirements in terms of device characteristics and DSP performance. Apart from digital coherent technologies and advanced direct detection systems, such as Stokes-vector and Kramers-Kronig schemes, we 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.

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“…e core processing module of hash computing is mainly responsible for hash calculation of blockchain data, which is implemented in full-pipeline mode and supports hash calculation of SHA1, SHA256, and so forth. [15]. In the process of transmitting control messages, if the receiver does not have an ARP response, the system will issue a timeout error because ARP does not respond; if there is a timeout transmission, the system will show the number of times of timeout transmission.…”

Section: Communication Optimizationmentioning

confidence: 99%

A Study on the Optimization of Blockchain Hashing Algorithm Based on PRCA

Qiao

Huang

et al. 2020

Security and Communication Networks

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Blockchain is widely used in encrypted currency, Internet of Things (IoT), supply chain finance, data sharing, and other fields. However, there are security problems in blockchains to varying degrees. As an important component of blockchain, hash function has relatively low computational efficiency. Therefore, this paper proposes a new scheme to optimize the blockchain hashing algorithm based on PRCA (Proactive Reconfigurable Computing Architecture). In order to improve the calculation performance of hashing function, the paper realizes the pipeline hashing algorithm and optimizes the efficiency of communication facilities and network data transmission by combining blockchains with mimic computers. Meanwhile, to ensure the security of data information, this paper chooses lightweight hashing algorithm to do multiple hashing and transforms the hash algorithm structure as well. The experimental results show that the scheme given in the paper not only improves the security of blockchains but also improves the efficiency of data processing.

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Symmetric 100-Gb/s TWDM-PON in O-Band Based on 10G-Class Optical Devices Enabled by Dispersion-Supported Equalization

Cited by 27 publications

References 19 publications

A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions

A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions

200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects

A Study on the Optimization of Blockchain Hashing Algorithm Based on PRCA

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