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Principles of all-optical switching fabrics with minimum number of stages

 
: Giglmayr, J.

IEEE Lasers and Electro-Optics Society; Optical Society of America -OSA-, Washington/D.C.; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Optics in Computing 1997. Postconference Edition : March 18 - 21, 1997, Hyatt Regency Lake Tahoe, Incline Village, Nevada
Washington, DC: OSA, 1997 (OSA Technical digest series 1997,8)
ISBN: 1-557-52490-4
ISBN: 1-557-52491-2
ISBN: 1-557-52485-8
S.24-26
Conference "Optics in Computing" <1997, Incline Village/Nev.>
Englisch
Konferenzbeitrag
Fraunhofer HHI ()
electro-optical switches; optical computing; optical interconnections; parallel architectures; switching circuits; all-optical switching fabrics; minimum stage number; all-optical minimum-stage switching fabrics; multilayer architecture; parallel transpositions; o(1)-switching fabric; 2x2-switches; number of stages; low attenuation; crosstalk; optical beam splitters

Abstract
The concept of all-optical minimum-stage switching fabrics is presented and compared with other competitors. The multilayer architecture is based on decomposing permutations into parallel transpositions. The O(1)-switching fabric requires the largest number of 2x2-switches, but offers a considerable reduction of the number of stages (NS) (in principle, 3 stages for any size of the switching fabric). Thus a low attenuation of signals passing the switch is expected. However, the (uniform) subdivision of the inputs by the 'splitters' and the crosstalk are further problems which will be analysed in a forthcoming paper.

: http://publica.fraunhofer.de/dokumente/N-13099.html