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Proceedings Paper

Photonic switching architectures with logic cells
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Paper Abstract

Possible switching architectures, with Optically Programmable Logic Cells -- OPLCs -- will be reported in this paper. These basic units, previously employed by us for some other applications mainly in optical computing, will be employed as main elements to switch optical communications signals. The main aspect to be considered is that because the internal components of these cells have nonlinear behaviors, namely either pure bistable or SEED-like properties, several are the possibilities to be obtained. Moreover, because their properties are dependent, under certain condition, of the signal wavelength, they are apt to be employed in WDM systems and the final result will depend on the corresponding optical signal frequency. We will give special emphasis to the case where self-routing is achieved, namely to structures of the Batcher or Banyan type. In these cases, as it will be shown, there is the possibility to route any packet input to a certain direction according to its first bits. The number of possible outputs gives the number of bits needed to route signals. An advantage of this configuration is that a very versatile behavior may be allowed. The main one is the possibility to obtain configurations with different kinds of behavior, namely, Strictly Nonblocking, Wide-Sense Nonblocking or Rearrangeably Nonblocking as well as to eliminate switching conflicts at a certain intermediate stages.

Paper Details

Date Published: 19 August 2003
PDF: 11 pages
Proc. SPIE 5247, Optical Transmission Systems and Equipment for WDM Networking II, (19 August 2003); doi: 10.1117/12.511806
Show Author Affiliations
Ana P. G. Marcos, Univ. Politecnica de Madrid (Spain)
Jose M. Pereda, Univ. Politecnica de Madrid (Spain)


Published in SPIE Proceedings Vol. 5247:
Optical Transmission Systems and Equipment for WDM Networking II
Benjamin B. Dingel; Werner Weiershausen; Achyut K. Dutta; Ken-Ichi Sato, Editor(s)

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