The impact of single mode technology on passive optical components

1984 ◽  
Author(s):  
Richard M. Klein
Keyword(s):  
Single Mode ◽  
Optical Components ◽  
The Impact

scholarly journals A Stochastic Optimal Control Approach for Power Management in Plug-In Hybrid Electric Vehicles

2008 ◽  
Author(s):  
Scott J. Moura ◽  
Hosam K. Fathy ◽  
Duncan S. Callaway ◽  
Jeffrey L. Stein
Keyword(s):  
Power Management ◽  
Hybrid Electric Vehicle ◽  
Single Mode ◽  
Stochastic Dynamic ◽  
Electricity Pricing ◽  
Control Approach ◽  
Potential Benefits ◽  
Hybrid Electric ◽  
The Impact ◽  
Charge Depletion

This paper examines the problem of optimally splitting driver power demand among the different actuators (i.e., the engine and electric machines) in a plug-in hybrid electric vehicle (PHEV). Existing studies focus mostly on optimizing PHEV power management for fuel economy, subject to charge sustenance constraints, over individual drive cycles. This paper adds three original contributions to this literature. First, it uses stochastic dynamic programming to optimize PHEV power management over a distribution of drive cycles, rather than a single cycle. Second, it explicitly trades off fuel and electricity usage in a PHEV, thereby systematically exploring the potential benefits of controlled charge depletion over aggressive charge depletion followed by charge sustenance. Finally, it examines the impact of variations in relative fuel-to-electricity pricing on optimal PHEV power management. The paper focuses on a single-mode powersplit PHEV configuration for mid-size sedans, but its approach is extendible to other configurations and sizes as well.

scholarly journals Influence of Even-Order Dispersion on Super-Sech Soliton Transmission Quality under Coherent Crosstalk

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
Aleksandra Panajotovic ◽  
Daniela Milovic ◽  
Anjan Biswas ◽  
Essaid Zerrad
Keyword(s):  
Fourth Order ◽  
Optical Network ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Higher Order ◽  
Trailing Edges ◽  
Even Order ◽  
Transmission Quality ◽  
The Impact ◽  
Order Dispersion

The transmission speed of optical network strongly depends on the impact of higher order dispersion. In presence of coherent crosstalk, which cannot be otherwise controlled by optical filtering, the impact of higher order dispersions becomes more pronounced. In this paper, the general expressions, that describe pulse deformation due to second- and fourth-order dispersions in a single-mode fiber, are given. The responses for such even-order dispersions, in presence of coherent crosstalk, are characterized by waveforms with long trailing edges. The transmission quality of optical pulses, due to both individual and combined influence of second- and fourth-order dispersions, is studied in this paper. Finally, the pulse shape and eye diagrams are obtained.

Large Plasmonic Resonance Shifts From Metal Loss in Slits

2021 ◽  
Author(s):  
Zohreh Sharifi ◽  
Reuven Gordon
Keyword(s):  
Time Domain ◽  
Finite Difference Time Domain ◽  
Single Mode ◽  
Metal Loss ◽  
Plasmonic Resonance ◽  
Reflection Phase ◽  
Past Experiment ◽  
Fabry Perot ◽  
The Impact ◽  
Difference Time

Abstract The impact of loss on the plasmonic resonances in metal-insulator­metal slits is analyzed, particularly the significant effect of loss on the reflection phase. The reflection is calculated analytically using single mode matching the­ory with the unconjugated form of the orthogonality relation. This theoretical calculation agrees well with comprehensive simulations, but differs substan­tially from the conjugated orthogonality result, as was used in past analytical works. This reflection phase has a large impact on the plasmonic resonance wavelengths, which are calculated using a Fabry-Pérot theory and compared with past experiment and finite-difference time-domain simulations.

scholarly journals Characterization of a Y-Coupler and Its Impact on the Performance of Plastic Optical Fiber Links

Fibers ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 96 ◽  
Author(s):  
Alicia López ◽  
M. Losada ◽  
Javier Mateo ◽  
N. Antoniades ◽  
Xin Jiang ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Power Distribution ◽  
Glass Fibers ◽  
Single Mode ◽  
Transmission Properties ◽  
Modal Power ◽  
Custom Made ◽  
Plastic Optical Fibers ◽  
The Impact

Couplers and splitters are common devices in single-mode and multi-mode glass fibers applications, where they perform a variety of functions. However, when switching to plastic optical fibers (POFs), there is a shortage of commercial devices, which are usually custom-made. The problem with these devices is that modal power distribution in POFs is easily modified by spatial disturbances that produce a localized strong power transfer between modes, thus changing their transmission properties. In this work, a commercial Y-coupler designed for POFs is experimentally characterized. Measurements of its spectral, spatial and temporal characteristics have been performed, including insertion loss as a function of wavelength, angular power distribution, and frequency response. The obtained results show that this device has an equalizing effect over the power spatial distribution that reduces the fiber bandwidth, demonstrating the importance of considering the impact of this type of devices on the transmission properties of any POF system.

scholarly journals Integrated Optics in Astronomical Interferometry

1994 ◽  
Vol 158 ◽  
pp. 261-271 ◽  
Author(s):  
V. Coudé du Foresto
Keyword(s):  
Integrated Optics ◽  
Single Mode ◽  
Spatial Filtering ◽  
Coherent Beam ◽  
Optical Components ◽  
Polarization Behavior ◽  
Integrated Optical ◽  
Fringe Tracking ◽  
And Control

Integrated optical components (mostly single-mode fibers and couplers) can be used to achieve several functions that are needed in interferometry: coherent beam transportation and recombination, pathlength modulation and control for fringe tracking and double Fourier interferometry, spatial filtering of the wavefront and interferogram calibration. Their potential is assessed and the main problems encountered in their implementation are discussed: dispersion, polarization behavior, and especially starlight injection.

Numerical Bifurcation Analysis of Multimode Impact Oscillations Between a Pantograph and a Rigid Conductor Line

2012 ◽  
Author(s):  
Kiyotaka Yamashita ◽  
Tomoaki Nakayama ◽  
Toshihiko Sugiura ◽  
Hiroshi Yabuno
Keyword(s):  
Bifurcation Analysis ◽  
Numerical Technique ◽  
Single Mode ◽  
Current Collection ◽  
Conductor Line ◽  
Mode Solution ◽  
Numerical Bifurcation ◽  
The Impact ◽  
Impact Oscillations ◽  
Numerical Bifurcation Analysis

This paper deals with the numerical bifurcation analysis of the contact loss between a pantograph and an overhead rigid conductor line in a railway current collection system. In the previous study, we modeled this problem as impact oscillations of an intermediate spring-supported beam excited by an oscillating plate. We have already derived the modal interaction relationship equations that describe the velocities immediately after an impact as functions of the velocities before impact for each vibration mode. A numerical calculation using these relationship equations was performed to clarify the impact oscillations with multiple vibration modes. In this paper, we propose a numerical technique based on maps that transform the state of the system at the impact to the subsequent state at the next impact. This numerical method produces stability analyses of the fixed points of the map that describes an impact oscillation with multiple modes. These results can differ surprisingly from the expectations based on a single-mode solution. These results are compared with experiments undertaken in our laboratory, utilizing a thin stainless steel beam. The typical features of impact oscillations, which were theoretically predicted, were confirmed qualitatively.

Single Mode Optical Components In Integrated Optics On Glass

1989 ◽  
Author(s):  
Denys Haux ◽  
Michel Di Maggio ◽  
Sandrine Samso ◽  
Roland Hakoun ◽  
Jean Martin
Keyword(s):  
Integrated Optics ◽  
Single Mode ◽  
Optical Components

scholarly journals Experimental evaluation of the impact of the light source on the measurement of short-term average crosstalk in homogeneous single-mode multi-core fibers

2020 ◽  
Vol 28 (23) ◽  
pp. 35099
Author(s):  
Ruben S. Luís ◽  
Georg Rademacher ◽  
Benjamin J. Puttnam ◽  
Yoshinari Awaji ◽  
Hideaki Furukawa
Keyword(s):  
Light Source ◽  
Experimental Evaluation ◽  
Single Mode ◽  
Short Term ◽  
The Impact

scholarly journals A Perturbation Platform System for Balance Testing and Rehabilitation Interventions

2020 ◽  
Author(s):  
Corey Pew ◽  
Soroosh Sadeh ◽  
Richard R. Neptune ◽  
Hao-Yuan Hsiao
Keyword(s):  
Single Mode ◽  
The United States ◽  
Original Position ◽  
Control Mechanisms ◽  
Home Setting ◽  
Balance Testing ◽  
Portable System ◽  
Platform System ◽  
And Control ◽  
The Impact

Abstract Background Falling is a leading cause of injury and death in the United States. Researchers and clinicians strive to identify and rehabilitate those at risk of falling in order to mitigate the impact of fall events and prevent future falls. Recently, perturbation-based balance testing and interventions have received increased attention, partly because reactive postural control responses triggered by perturbations are important for balance recovery during actual falls. However, current systems are limited by the need for multiple individuals to operate the device, downtime between trials to reset the perturbation and/or single mode functionality. To this end, we have developed a Perturbation Platform System that can induce perturbations in both vertical and angled directions. Results The system consists of two box platforms that can individually perform straight (25.4 mm, 50.8 mm and 76.2 mm) and angled (5°, 10°, and 15°) height changes while an individual is standing or walking overground. In addition, the system can automatically reset to the original position following perturbation. The platform achieves peak downward accelerations of 5.41 m/s2 during drop events that simulate sudden changes in foot-contact surfaces. Conclusions The novel system can be used in a laboratory setting to better understand balance response and control mechanisms. In addition, this portable system can be used in a clinical or home setting to provide perturbation-based balance exercises that aim to improve balance and mobility.

scholarly journals Using meta-networks to analyse the impact of adverse random events on the time and cost of completing

2019 ◽  
Vol 28 (2) ◽  
pp. 192-202
Author(s):  
Grzegorz Śladowski
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Dynamic Network ◽  
Single Mode ◽  
Project Schedule ◽  
Material Resources ◽  
Simulation Based ◽  
Random Events ◽  
Risk Sources ◽  
The Impact

According to the concept of a system-based approach, a construction project can be treated as a complex system composed of various elements, such as human, equipment and material resources, as well as knowledge and tasks that are mutually interlinked. In the classical approach to construction project risk assessment, the impact of the “system” in the analysis of relationships between risk sources and their consequences has so far been neglected. The concept of construction project vulnerability and its adaptability has appeared in literature in recent years. It is analysed on the basis of a project’s vulnerability to the impact of risk factors and its adaptive capacity is seen an answer to project perturbations caused by adverse random events. As a part of developing the system-based approach to analysing construction project schedule, the author further developed the concept of modelling planned construction projects with relationship meta-networks composed of four types of nodes: agents (human resources), knowledge, equipment and material resources and tasks. The author included possible deviations from the planned project’s budget in the schedule vulnerability and adaptability analysis, instead of only focusing on deviations from its completion deadline. An analysis of the occurrence of additional and replacement work was introduced by the author, which further developed the concept of the simulated evolution of such networks to include the capacity to introduce new nodes and links into their structure. Furthermore, the author used the potential of weighted meta-networks to model certain dependencies within the planned project. A simulation-based approach as a part of DNA (dynamic network analysis) was used to analyse the vulnerability and adaptability of such networks. The proposed approach was presented on the example of a renovation project performed on a historical structure. The conclusions drawn from the author’s analyses can be used to formulate construction project schedules that are less vulnerable to perturbations and are characterised by greater adaptability. In the future, the author plans to expand the analysis presented above to include dependencies in single-mode networks (e.g. in agent, resource or knowledge networks) on the meta-network of a project.

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