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 ...

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 ...

Optical nonreciprocity and routing using optocal microcavities draw much atttention in recent years. Here, we report the results of study on optomechanical multimode interference an optical microcavity. The system used here possesses multi-optical modes a mechanical mode. Optomechanical induced transparency absorption, appear due to between different paths. can present significant properties wh...

A 640-Gb/s high-speed ATM switching system that is based on the technologies of advanced MCM-C, 0.25m CMOS, and optical wavelength-division-multiplexing (WDM) interconnection is fabricated for future broadband services. A 40-layer, 160 114 mm ceramic MCM forms the basic ATM switch module with 80-Gb/s throughput. It consists of an 8 advanced 0.25m CMOS LSIs and 32 I/O bipolar LSIs. The MCM has a...

Novel optical network architectures are proposed for creating future network services. The first architecture is a centralized approach for higher energy efficiency; it yields a data centercentric metro/access optical aggregation network based on wavelength/time-slot multiplexing. Not only higher application layer functions but also all layer-3 or upper traffic are transferred through the simpl...

This paper discusses multi-hop operation of an optical-label switching system, demonstrating rapid alloptical packet switching with 2R regeneration for the data and optical label swapping for the label. Introduction Optical-label switching technology has the potential to provide low latency and transparency desired for the next generation Internet [1-2]. For network applications, the router mus...

In this paper, an auto-optical inspection system for fishtail collapse of router was proposed. The proposed AOI system first extracts the fishtail image of router by developed mechanism. A method for identifying the center of fishtail was proposed. The 1D profile formed by the boundary and center of fishtail is used to segment the fishtail into several blades. We used the end gash to identify o...