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A low-voltage 8×8 Ti:LiNbO3 switch with a dilated-Benes architecture

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10 Author(s)
Watson, J. ; AT&T Bell Lab. Breinigsville, PA, USA ; Milbrodt, M.A. ; Bahadori, K. ; Dautartas, M.F.
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An 8×8 switch array with a dilated-Benes architecture that greatly relaxes the crosspoint extinction ratio requirements needed to achieve low overall switch array crosstalk is discussed. This, combined with the low uniform switching voltages (9.2+0.2 V) of the 48 directional coupler crosspoints, facilitates high-speed low-crosstalk operation. The crosspoints can be switched in about 1 ns. The switch array is fully packaged with permanently attached single-mode fiber pigtails. The high data transfer rate inherent in lithium niobate switches in general, combined with the low crosstalk and high switching speed of this switch array, is a good match to the requirements of time-multiplexing switching

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Lightwave Technology, Journal of  (Volume:8 ,  Issue: 5 )