scholarly journals Power consumption in telecommunication networks: overview and reduction strategies

2011 ◽  
Vol 49 (6) ◽  
pp. 62-69 ◽  
Author(s):  
Willem Vereecken ◽  
Ward Heddeghem ◽  
Margot Deruyck ◽  
Bart Puype ◽  
Bart Lannoo ◽  
...  
Keyword(s):  
Power Consumption ◽  
Telecommunication Networks ◽  
Reduction Strategies

scholarly journals Ultracompact and low-power-consumption silicon thermo-optic switch for high-speed data

Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 937-945
Author(s):  
Ruihuan Zhang ◽  
Yu He ◽  
Yong Zhang ◽  
Shaohua An ◽  
Qingming Zhu ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
High Speed ◽  
High Performance ◽  
Pulse Amplitude ◽  
Telecommunication Networks ◽  
Low Power Consumption ◽  
Power Efficient ◽  
High Speed Data ◽  
On Chip

AbstractUltracompact and low-power-consumption optical switches are desired for high-performance telecommunication networks and data centers. Here, we demonstrate an on-chip power-efficient 2 × 2 thermo-optic switch unit by using a suspended photonic crystal nanobeam structure. A submilliwatt switching power of 0.15 mW is obtained with a tuning efficiency of 7.71 nm/mW in a compact footprint of 60 μm × 16 μm. The bandwidth of the switch is properly designed for a four-level pulse amplitude modulation signal with a 124 Gb/s raw data rate. To the best of our knowledge, the proposed switch is the most power-efficient resonator-based thermo-optic switch unit with the highest tuning efficiency and data ever reported.

scholarly journals State of the Art and Perspectives on Silicon Photonic Switches

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 51 ◽  
Author(s):  
Xin Tu ◽  
Chaolong Song ◽  
Tianye Huang ◽  
Zhenmin Chen ◽  
Hongyan Fu
Keyword(s):  
Power Consumption ◽  
Large Scale ◽  
State Of The Art ◽  
Micro Electro Mechanical System ◽  
Telecommunication Networks ◽  
Photonic Switching ◽  
Waveguide Coupler ◽  
Large Bandwidth ◽  
Photonic Switches ◽  
Silicon Photonic

In the last decade, silicon photonic switches are increasingly believed to be potential candidates for replacing the electrical switches in the applications of telecommunication networks, data center and high-throughput computing, due to their low power consumption (Picojoules per bit), large bandwidth (Terabits per second) and high-level integration (Square millimeters per port). This review paper focuses on the state of the art and our perspectives on silicon photonic switching technologies. It starts with a review of three types of fundamental switch engines, i.e., Mach-Zehnder interferometer, micro-ring resonator and micro-electro-mechanical-system actuated waveguide coupler. The working mechanisms are introduced and the key specifications such as insertion loss, crosstalk, switching time, footprint and power consumption are evaluated. Then it is followed by the discussion on the prototype of large-scale silicon photonic fabrics, which are based on the configuration of above-mentioned switch engines. In addition, the key technologies, such as topological architecture, passive components and optoelectronic packaging, to improve the overall performance are summarized. Finally, the critical challenges that might hamper the silicon photonic switching technologies transferring from proof-of-concept in lab to commercialization are also discussed.

scholarly journals Optimum Sizing of Photovoltaic-Battery Power Supply for Drone-Based Cellular Networks

Drones ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 138
Author(s):  
Mahshid Javidsharifi ◽  
Hamoun Pourroshanfekr Arabani ◽  
Tamas Kerekes ◽  
Dezso Sera ◽  
Sergiu Viorel Spataru ◽  
...  
Keyword(s):  
Power Consumption ◽  
Cellular Networks ◽  
Power Supply ◽  
Telecommunication Network ◽  
Telecommunication Networks ◽  
Solar Irradiation ◽  
Battery System ◽  
Suggested Approach ◽  
Battery Power ◽  
Battery Capacity

In order to provide Internet access to rural areas and places without a reliable economic electricity grid, self-sustainable drone-based cellular networks have recently been presented. However, the difficulties of power consumption and mission planning lead to the challenge of optimal sizing of the power supply for future cellular telecommunication networks. In order to deal with this challenge, this paper presents an optimal approach for sizing the photovoltaic (PV)-battery power supply for drone-based cellular networks in remote areas. The main objective of the suggested approach is to minimize the total cost, including the capital and operational expenditures. The suggested framework is applied to an off-grid cellular telecommunication network with drone-based base stations that are powered by PV-battery systems-based recharging sites in a rural location. The PV-battery system is optimally designed for three recharging sites with three different power consumption profiles with different peak and cumulative loads. Results show that the optimal design of the PV-battery system is dependent on geographical data, solar irradiation, and ambient temperature, which affect the output power of the PV system, as well as the power consumption profile, which affects the required number of PV panels and battery capacity.

Compositional Tuning of Negative Differential Resistance in Bulk Silver Iodide Memristor

2020 ◽  
Author(s):  
SMITA GAJANAN NAIK ◽  
Mohammad Hussain Kasim Rabinal
Keyword(s):  
Power Consumption ◽  
Negative Differential Resistance ◽  
Silver Iodide ◽  
Differential Resistance ◽  
Fast Response ◽  
Low Power Consumption ◽  
Switching Effect ◽  
Memory Switching ◽  
Bulk Silver ◽  
Emerging Memory

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...

Psychometric and normative-focused reduction strategies for the 2009 aJDI

2010 ◽  
Author(s):  
Michael T. Sliter ◽  
Scott A. Withrow ◽  
Michelle H. Balzer ◽  
Michelle H. Brodke ◽  
Jennifer Z. Gillespie ◽  
...  
Keyword(s):  
Reduction Strategies

Alcohol Reduction Strategies--Current Confidence

2011 ◽  
Author(s):  
Erin E. Bonar ◽  
Harold Rosenberg ◽  
Erica Hoffmann ◽  
Shane W. Kraus ◽  
Elizabeth Kryszak ◽  
...  
Keyword(s):  
Reduction Strategies ◽  
Alcohol Reduction

Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang
Keyword(s):  
Linear Programming ◽  
Power Consumption ◽  
Low Power ◽  
Optimization Design ◽  
Structural Parameters ◽  
Axial Position ◽  
Low Power Consumption ◽  
Optimal Method ◽  
Atomic Spin ◽  
Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

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