Results 291 to 300 of about 383,407 (335)
Some of the next articles are maybe not open access.
Optical Switching Technologies and Switching in Optical Future Networks
2006 International Conference on Transparent Optical Networks, 2006Compared with the large range of optical switching technologies that have been the subject of research, very few have been deployed on a significant scale in telecommunications networks. From an industrial and commercial viewpoint, this paper describes the current status of the more successful ones and relates them to their network applications and to ...
openaire +1 more source
Optical waveguide switch (3 × 3) for an optical switching system
Applied Optics, 1978A new optical switch element is proposed for a switching system which exchanges optical signals in optical transmission lines without optoelectric conversion. It consists of three parallel equidistant straight singlemode waveguides fabricated of an electrooptic material with electrodes deposited on them. The element, whose interaction length is pi/(2)((
H, Ogiwara, H, Yamamoto
openaire +2 more sources
Non-preemptive scheduling of optical switches
IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., 2005Many high-speed routers today use input-queuing (IQ) architectures with a crossbar switching fabric based on optical technology. Packets in the input queues are divided into cells of unit length, and the goal is to find a schedule of minimum makespan that forwards all packets to the output ports.
Alexander Kesselman, Kirill Kogan
openaire +1 more source
An introduction to optical burst switching
IEEE Communications Magazine, 2003Optical burst switching is a promising solution for all-optical WDM networks. It combines the benefits of optical packet switching and wavelength routing while taking into account the limitations of the current all-optical technology. In OBS, the user data is collected at the edge of the network, sorted based on a destination address, and grouped into ...
Tzvetelina Battestilli, Harry G. Perros
openaire +1 more source
Optical switching technologies for fast optical packet switching
Proceedings of 2002 4th International Conference on Transparent Optical Networks (IEEE Cat. No.02EX551), 2003A survey of optical switching technologies being candidates for an optical packet switched (OPS) network is presented. Switching time range for optical switching fabrics is found through analysis. In light of this, and based on reported switch devices, switching technologies are identified as candidates for OPS.
openaire +1 more source
Optics News, 1989
An acousto-optic architecture is presented to implement a nonblocking space-division switch with O(N) complexity. Signal degradation is minimal so that the switch is suitable for nonregenerative application within optical networks; it is also capable of rapid reconfiguration. Experiments for a 1 x 4 switch show an insertion loss ranging from 4.6 to 5.6
D O, Harris, A, Vanderlugt
openaire +2 more sources
An acousto-optic architecture is presented to implement a nonblocking space-division switch with O(N) complexity. Signal degradation is minimal so that the switch is suitable for nonregenerative application within optical networks; it is also capable of rapid reconfiguration. Experiments for a 1 x 4 switch show an insertion loss ranging from 4.6 to 5.6
D O, Harris, A, Vanderlugt
openaire +2 more sources
Waveband switching in optical networks
IEEE Communications Magazine, 2003The rapid advances in dense wavelength-division multiplexing technology with hundreds of wavelengths per fiber and worldwide fiber deployment have brought about a tremendous increase in the size (i.e., number of ports) of photonic cross-connects, as well as in the cost and difficulty associated with controlling such large cross-connects.
Xiaojun Cao +2 more
openaire +1 more source
Optical Switching System Experiment
IEEE Transactions on Communications, 1979The construction and experimental results of a tiny optical video switching system are described. It had a 4 × 3 switch network composed of seventeen 1 × 2 type meehanical optical fiber switches whose average loss was 2.6 dB. Network insertion loss was about 20 dB. Insertion loss cause, signaling method and improvement for practical use are discussed.
Haruo Ogiwara, Kohma Suzuki
openaire +1 more source
Integrated Optical Modulation And Switching
SPIE Proceedings, 1984Integrated optic has shown a continuous growth since the original papers describing the potential possibilities of this new field (see for example (1)). Many different waveguide configurations and materials were used to realize passive as well as active devices.
openaire +1 more source