284 research outputs found
Application of laser neural networks in telecommunication nodes
No full textThe concepts of a laser neural network (LNN) are presented. It is shown how a LNN can be used as an optical data switch. A discussion about the applications of a LNN in an optical data switch is given.</p
Design and optimization of evanescently coupled waveguide photodiodes
No full textWe present the design and optimization of evanescently coupled waveguide photodiodes(EC-WPDs) based on the coupling modes theory and the beam propagation method. Efficient focalization of the optical power in the absorber is achieved by an appropriate choice of index matching layers of EC-WPDs. Numerical simulation shows that high-speed(40 GHz), high quantum efficiency(81%) and high linearity photodiodes can be achieved, and EC-WPDs are promising devices for future optical communication systems.?2011 Chinese Institute of Electronics
Signaling requirements for smart dynamic pricing in cellular networks
No full text© Copyright 2006 IEEESmart pricing is a dynamic pricing scheme which varies price in response to the relative scarcity of network resources and has been developed by a team including the authors to be implemented on 3G mobile telecommunications networks. This paper analyses the necessary signaling requirements and proposes a signaling model for smart pricing. In this model, a new network element called dynamic pricing engine is proposed. This element is responsible for setting tariffs depending on the level of congestion in a cell and specifies the quality of service required. Simulations have yielded relationships between the arrival rates for multiple services (such as voice calls and video conferencing) and signaling load. We are also able to estimate how much of that signaling volume results in billable events (so-called cost-recoverable signaling) versus signaling which does not, such as abandoned call attempts (cost non-recoverable signaling) over a range of traffic volumes.Vo, D. ; Sorell, M
The application of MEMS technology in optical communications
No full textAn overview is given on the ongoing investigation of the use of microelectromechanical systems (MEMS) fabrication technology for applications in optical communications. It is described what they are and how they are built. The potential of MEMS to revolutionize lightwave systems is emphasized.EI
640Gbit/s all-optical demultiplexing using nonlinear polarization rotat in semiconductor optical amplifier
No full textTheoretical analysis on terahertz optical asymmetric demultiplexer as all-optical packet switch
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