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Low-crosstalk 2*3 optical switch composed of twisted nematic liquid crystal cells

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1 Author(s)
Y. Fujii ; NTT Transmission Syst. Lab., Kanagawa, Japan

A low-crosstalk structure for a 2*2 optical switch using twisted nematic liquid crystal (TN-LC) cells is proposed. Low crosstalk can be obtained by alternately arranging three TN-LC cells and two walkoff polarizing beam splitters. A 2*2 optical switch is assembled with single-mode fibers. Its insertion loss and crosstalk, in both switching modes, are >

Published in:

IEEE Photonics Technology Letters  (Volume:5 ,  Issue: 6 )