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Device and method for the temperature-independent operation of electro-optical switches on the basis of ferroelectric liquid crystals having a deformed helix

  • US 6,900,874 B1
  • Filed: 08/24/2000
  • Issued: 05/31/2005
  • Est. Priority Date: 08/30/1999
  • Status: Expired due to Fees
First Claim
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1. An optical liquid crystal modulator comprising:

  • at least one ferroelectric liquid crystal, wherein the at least one ferroelectric liquid crystal has a DHF mode and, at a location of the at least one ferroelectric liquid crystal, exhibits an operating range of an electric field of more than 20 V/μ

    m, wherein at a temperature of about 20.0°

    C., a helical pitch Po is between about 0.1 to about 0.5 μ

    m.

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