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Low-crosstalk 1*2 optical switch composed of twisted nematic liquid crystal cells

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

A low-crosstalk structure for a 1*2 optical switch using twisted nematic liquid crystal (TN-LC) cells is proposed. Low crosstalk can be obtained by using a walkoff polarizing beam splitter between two TN-LC cells mutually controlled in opposite states. A 1*2 polarization-independent optical switch is assembled using single-mode fibers. Its insertion loss and crosstalk, in both switching modes, are >

Published in:

Photonics Technology Letters, IEEE  (Volume:5 ,  Issue: 2 )