A high-speed micro-ring modulator for next generation energy-efficient optical networks beyond 100 Gbaud

2021 ◽  
Author(s):  
Meer Sakib ◽  
Peicheng Liao ◽  
Chaoxuan Ma ◽  
Ranjeet Kumar ◽  
Duanni Huang ◽  
...  
Keyword(s):  
Optical Networks ◽  
Energy Efficient ◽  
High Speed ◽  
Next Generation ◽  
Ring Modulator

scholarly journals DSP-Based 40 GB/s Lane Rate Next-Generation Access Networks

2018 ◽  
Vol 10 (12) ◽  
pp. 118 ◽  
Author(s):  
Jinlong Wei ◽  
Ji Zhou ◽  
Elias Giacoumidis ◽  
Paul Haigh ◽  
Jianming Tang
Keyword(s):  
Optical Networks ◽  
High Speed ◽  
Digital Signal ◽  
Pulse Amplitude ◽  
Network Capacity ◽  
Access Networks ◽  
Next Generation ◽  
Efficient Manner ◽  
Continuous Growth ◽  
Modulation Format

To address the continuous growth in high-speed ubiquitous access required by residential users and enterprises, Telecommunication operators must upgrade their networks to higher data rates. For optical fiber access networks that directly connect end users to metro/regional network, capacity upgrade must be done in a cost- and energy-efficient manner. 40 Gb/s is the possible lane rate for the next generation passive optical networks (NG-PONs). Ideally, existing 10 G PON components could be reused to support 40 Gb/s lane-rate NG-PON transceiver, which requires efficient modulation format and digital signal processing (DSP) to alleviate the bandwidth limitation and fiber dispersion. The major contribution of this work is to offer insight performance comparisons of 40 Gb/s lane rate electrical three level Duobinary, optical Duobinary, and four-level pulse amplitude modulation (PAM-4) for incorporating low complex DSPs, including linear and nonlinear Volterra equalization, as well as maximum likelihood sequence estimation. Detailed analysis and comparison of the complexity of various DSP algorithms are performed. Transceiver bandwidth optimization is also undertaken. The results show that the choices of proper modulation format and DSP configuration depend on the transmission distances of interest.

scholarly journals Swift Reliability Test Methodology of 100G High-Speed, Energy-efficient Electro-Absorption Modulated Lasers (EML) for Green Datacenter Networks

2016 ◽  
Vol 3 (1) ◽  
pp. 74 ◽  
Author(s):  
Jack Jia-Sheng Huang ◽  
Yu-Heng Jan ◽  
Jesse Chang ◽  
Yi-Ching Hsu ◽  
Dawei Ren ◽  
...  
Keyword(s):  
Optical Networks ◽  
Energy Efficient ◽  
High Speed ◽  
Data Communication ◽  
Field Performance ◽  
Information Storage ◽  
Reliability Test ◽  
Data Traffic ◽  
Gigabit Ethernet ◽  
Test Methodology

High-speed transceivers are receiving great interest due to the demand for huge data traffic and information storage capacities in the Big Data era. Recently, 100 Gigabit Ethernet (100GbE) has become an IEEE standardized data communication protocol. The 100G quad small form-factor pluggable (QSFP) transceiver is one of the key technological enablers in the high-speed optical networks. In this paper, we study the reliability current dependence for the four-lambda QSFP (4x25G) EML devices that are employed in the 100G QSFP transceivers. In order to meet the energy-efficient and environmental requirements, we develop a swift reliability test methodology that can provide fast, accurate reliability assessment to ensure robust long-term field performance. We discuss the acceleration factor and extrapolation for the energy-efficient reliability test.

scholarly journals Comparison of cost- and energy-efficient signal modulations for next generation passive optical networks

2015 ◽  
Vol 23 (22) ◽  
pp. 28271 ◽  
Author(s):  
J. L. Wei ◽  
K. Grobe ◽  
C. Sanchez ◽  
E. Giacoumidis ◽  
H. Griesser
Keyword(s):  
Optical Networks ◽  
Energy Efficient ◽  
Passive Optical Networks ◽  
Next Generation

Analysis of Inter-Satellite Optical Wireless Communication System

2017 ◽  
Vol 7 (10) ◽  
pp. 10
Author(s):  
Rajbir Singh
Keyword(s):  
Wireless Communication ◽  
Optical Networks ◽  
Data Transmission ◽  
High Speed ◽  
Open Space ◽  
Communication Link ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
High Speed Data ◽  
Speed Data Transmission

Optical networks are bandwidth efficient networks are used for long haul communication providing seamless data transfer. For high speed data transmission in open space between different satellites, Inter-satellite Optical wireless communication (IsOWC) is widely used .In this paper we have evaluated the performance of IsOWC communication link for high speed data transmission .The performance of the system is evaluated on the basis of qualitative parameters such as Q-factor and BER using optisystem simulator.

scholarly journals Dual-shot dynamics and ultimate frequency of all-optical magnetic recording on GdFeCo

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Sicong Wang ◽  
Chen Wei ◽  
Yuanhua Feng ◽  
Hongkun Cao ◽  
Wenzhe Li ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Energy Efficient ◽  
High Speed ◽  
Data Transfer ◽  
Laser Pulses ◽  
Time Resolved ◽  
All Optical ◽  
Fs Laser ◽  
High Speed Data ◽  
Natural Way

AbstractAlthough photonics presents the fastest and most energy-efficient method of data transfer, magnetism still offers the cheapest and most natural way to store data. The ultrafast and energy-efficient optical control of magnetism is presently a missing technological link that prevents us from reaching the next evolution in information processing. The discovery of all-optical magnetization reversal in GdFeCo with the help of 100 fs laser pulses has further aroused intense interest in this compelling problem. Although the applicability of this approach to high-speed data processing depends vitally on the maximum repetition rate of the switching, the latter remains virtually unknown. Here we experimentally unveil the ultimate frequency of repetitive all-optical magnetization reversal through time-resolved studies of the dual-shot magnetization dynamics in Gd27Fe63.87Co9.13. Varying the intensities of the shots and the shot-to-shot separation, we reveal the conditions for ultrafast writing and the fastest possible restoration of magnetic bits. It is shown that although magnetic writing launched by the first shot is completed after 100 ps, a reliable rewriting of the bit by the second shot requires separating the shots by at least 300 ps. Using two shots partially overlapping in space and minimally separated by 300 ps, we demonstrate an approach for GHz magnetic writing that can be scaled down to sizes below the diffraction limit.

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