To enhance the video transmission security of a physical layer over wireless optical communication, an switch configured in front arrayed waveguide grating (AWG) router is proposed for implementing reconfigurable wavelength hopping configuration division multiplexing network protection against eavesdropping. In practical experiment AWG/optical-switch-based random scheme, simulated pseudorandom ...

Abstract: In this paper, we aim to design and propose a novel structure for all-opticalhalf subtractor based on the photonic crystal. The structure includes two optical switches,one power splitter, and one power combiner. The optical switches are made of theresonant rings which use the nonlinear rods for dropping operation. The footprint of thedesigned structure is about...

Many Cisco routers and switches support NetFlow services which provides a detailed source of data about network traffic. The Office of Information Technology Enterprise Networking Services group (OIT/ENS) at The Ohio State University (OSU) has written a suite of tools called flow-tools to record, filter, print and analyze flow logs derived from exports of NetFlow accounting records. We use the ...

Chris Speed Design Informatics 78 West Port, Edinburgh University of Edinburgh Abstract Based upon a study of how to capture data from Internet of Things (IoT) devices, this paper explores the challenges for data centric design ethnography. Often purchased to perform specific tasks, IoT devices exist in a complex ecosystem. This paper describes a study that used a variety of methods to capture ...

As network speeds continue to grow, current methods of translating destination IP addresses to output port numbers during routing become inadequately slow. Eventhough this lookup is often performed in hardware, it may still be limited by DRAM access latencies. We present a method of speeding up access to DRAM based lookup mechanisms by more than a factor of 10 using CPU style memory caches. Rea...

In this work, we present the NOC router architecture with five port support which utilizes dual crossbar arrangement, the latency which arises due to the dual cross bar architecture is reduced by using predominant routing algorithm. This arrangement is more efficient and reduces about 10 % of device utilization in this work, the use of dynamic voltage scaling (DVS) for links is implemented by p...

Optical switching will enable core Internet packet switching to scale with future transmission rate increases. Currently proposed optical ATM switches do not allow packet reassembly, which is necessary for packet level forwarding. This results in the requirement to create end to end ATM virtual connections for flows even if they contain only one packet. In electronically switched networks MPOA ...