scholarly journals Experimental and theoretical investigation of the impact of ultra-fast carrier dynamics on high-speed SOA-based all-optical switches

2006 ◽  
Vol 14 (1) ◽  
pp. 331 ◽  
Author(s):  
Mads L. Nielsen ◽  
Jesper Mørk ◽  
Rei Suzuki ◽  
Jun Sakaguchi ◽  
Yoshiyasu Ueno
Keyword(s):  
Theoretical Investigation ◽  
High Speed ◽  
Optical Switches ◽  
Carrier Dynamics ◽  
All Optical ◽  
The Impact

Comparison of interferometric all-optical switches for demultiplexing applications in high-speed OTDM systems

2002 ◽  
Vol 20 (4) ◽  
pp. 618-624 ◽  
Author(s):  
C. Schubert ◽  
J. Berger ◽  
S. Diez ◽  
H.J. Ehrke ◽  
R. Ludwig ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Switches ◽  
All Optical

All-Optical Switches and All-Optical Bistability by Nonlinear Optical Materials

1992 ◽  
Vol 247 ◽  
Author(s):  
K. Sasaki ◽  
S. Sasaki ◽  
O. Furukawa
Keyword(s):  
Optical Materials ◽  
High Speed ◽  
Optical Bistability ◽  
Directional Coupler ◽  
Basic Structure ◽  
Optical Switches ◽  
All Optical ◽  
Coupling Parameters ◽  
Layered Waveguide ◽  
High Speed Switching

ABSTRACTAll-optical switches and all-optical bistabili ties are realized by waveguide structures with vacuum evaporated polydiacetylene(PDA) films. The basic structure of the all-optical switches are prepared in the form of layered waveguide directional coupler with vacuum evaporated PDA top layer. Clearly switchings are observed at 1064nm of pulsed Nd:YAG laser. Furthermore ultra-high speed switching with Ti;Safire 135fs laser are recognized.Operations of all-optical bistabilities are carried out by nonlinear coupling at grating structures in waveguides with PDA top layers. Hysterisis curves of bistability are affected by coupling parameters of gratings and parameters of waveguides.

scholarly journals Design of all Optical Packet Switching Networks

2002 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Hussein T. Mouftah
Keyword(s):  
Optical Networks ◽  
Large Scale ◽  
Optical Network ◽  
Optical Switches ◽  
Traffic Load ◽  
Wavelength Converters ◽  
Small Scale ◽  
Wavelength Converter ◽  
All Optical ◽  
The Impact

Optical switches and wavelength converters are recognized as two of the most important DWDM system components in future all-optical networks. Optical switches perform the key functions of flexible routing, reconfigurable optical cross-connect (OXC), network protection and restoration, etc. in optical networks. Wavelength Converters are used to shift one incoming wavelength to another outgoing wavelength when this needs to be done.  Always residing in optical switches, they can effectively alleviate the blocking probability and help solve contention happening at the output port of switches. The deployment of wavelength converters within optical switches provides robust routing, switching and network management in optical layer, which is critical to the emerging all-optical Internet. However, the high cost of wavelength converters at current stage of manufacturing technology has to be taken into consideration when we design node architectures for an optical network. Our research explores the efficiency of wavelength converters in a long-haul optical network at different degrees of traffic load by running a simulation. Then, we propose a new cost-effective way to optimally design wavelength-convertible switch so as to achieve higher network performance while still keeping the total network cost down. Meanwhile, the routing and wavelength assignment (RWA) algorithm used in the research is designed to be a generic one for both large-scale and small-scale traffic. Removing the constraint on the traffic load makes the RWA more adaptive and robust. When this new RWA works in conjunction with a newly introduced concept of wavelength-convertible switches, we shall explore the impact of large-scale traffic on the role of wavelength converter so as to determine the method towards optimal use of wavelength convertible switches for all-optical networks.  

Time-resolved chirp properties of semiconductor optical amplifiers in high-speed all-optical switches

2013 ◽  
Vol 52 (3) ◽  
pp. 035003 ◽  
Author(s):  
Ligong Chen ◽  
Rongguo Lu ◽  
Shangjian Zhang ◽  
Jianfeng Li ◽  
Yong Liu
Keyword(s):  
High Speed ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Optical Switches ◽  
Time Resolved ◽  
All Optical

scholarly journals Theoretical and experimental study of fundamental differences in the noise suppression of high-speed SOA-based all-optical switches

2005 ◽  
Vol 13 (13) ◽  
pp. 5080 ◽  
Author(s):  
Mads L. Nielsen ◽  
Jesper Mørk ◽  
Rei Suzuki ◽  
Jun Sakaguchi ◽  
Yoshiyasu Ueno
Keyword(s):  
Experimental Study ◽  
High Speed ◽  
Noise Suppression ◽  
Optical Switches ◽  
All Optical

Modeling of Tread Block Contact Mechanics Using Linear Viscoelastic Theory3

2008 ◽  
Vol 36 (3) ◽  
pp. 211-226 ◽  
Author(s):  
F. Liu ◽  
M. P. F. Sutcliffe ◽  
W. R. Graham
Keyword(s):  
High Speed ◽  
Slip Rate ◽  
Material Model ◽  
Contact Forces ◽  
Block Modeling ◽  
Rate Dependent ◽  
Linear Viscoelastic Material ◽  
Linear Viscoelastic ◽  
The Impact ◽  
Good Agreement

Abstract In an effort to understand the dynamic hub forces on road vehicles, an advanced free-rolling tire-model is being developed in which the tread blocks and tire belt are modeled separately. This paper presents the interim results for the tread block modeling. The finite element code ABAQUS/Explicit is used to predict the contact forces on the tread blocks based on a linear viscoelastic material model. Special attention is paid to investigating the forces on the tread blocks during the impact and release motions. A pressure and slip-rate-dependent frictional law is applied in the analysis. A simplified numerical model is also proposed where the tread blocks are discretized into linear viscoelastic spring elements. The results from both models are validated via experiments in a high-speed rolling test rig and found to be in good agreement.

Sign in / Sign up

Export Citation Format

Share Document