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Rectangularly configured 4×4 Ti:LiNbO3 matrix switch with low drive voltage

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6 Author(s)
Sawaki, I. ; Fujitsu Lab. Ltd., Atsugi, Japan ; Shimoe, T. ; Nakamoto, H. ; Iwama, T.
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A matrix switch with a novel architecture has been demonstrated. A rectangularly configured 4×4 switch has been designed and fabricated on a 65-mm-long z-cut Ti:LiNbO3 chip. The average drive voltage of 16Δ β-reversal directional couplers is 9 V for a cross state and 20 V for a bar state. The drive voltage difference of 11 V is about half that of the conventional matrix switch. Drive voltage deviations are within ±0.5 V. The average insertion loss is 4.7 dB, and deviations for different paths are within ±0.3 dB, and deviations for different paths are within ±0.3 dB. The crosstalk of all crosspoint switches is also estimated based on crosstalk output measurements

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:6 ,  Issue: 7 )

Date of Publication:

Aug 1988

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