Quantum cryptography has been shown to be an effective technique for the secure distribution of cryptographic keys on point-to-point communication links. Here, we describe adaptations of the existing quantum cryptography protocols and equipment configurations that allow secure key distribution to be performed on a variety of multiuser passive optical network (PON) architectures. These adaptatio...

The performance of dataand telecommunication equipment must keep up with the increasing network speed. At the same time, one must deal with the internal interconnection complexity, often growing exponentially with the number of ports. Therefore, new interconnection technologies to be used internally in the equipment are needed. Optical interconnection technology is a promising alternative and m...

Optical fibers are utilized widely for data transmission systems because of their capacity to carry extensive information and dielectric nature. Network architectures utilizing multiple wavelengths per optical fiber used in central, metropolitan, or broad‐area applications link thousands users with a vast range speeds capacities. A powerful feature an communication is sending several through th...

in this paper, the effects of scintillation phenomena on bit error rate (ber) and signal to noise ratio (snr), which are essential characteristics in free space optical (fso) communication system, are studied. until now various methods have been introduced to decrease ber and increase the link's reliability. optimizing snr is one of the fundamental methods to decrease ber value. intensity fluct...

With the development of ubiquitous information environment in metallurgical industry, driving type of metallurgical equipment systems is changing from energy-driven to information-driven. The problems of the metallurgical equipment information communication path intelligent planning are taken as the research object. Based on the cellular automata theory, the integrated framework of metallurgica...