Ferroelectric liquid crystal driving method for optical switching devices in communication networks

Shigeto Kohda, Seiiti Shirai, Yoshie Takeuchi, Noriyoshi Yamauchi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The requirements that must be met by ferroelectric liquid crystal (FLC) cells in long-wavelength optical switches in communication networks are clarified with respect to the differences from display technology. A new driving method in which low sustain voltage is stored in active-matrix FLC cell was presented and demonstrated experimentally. The memory ratio, extinction ratio and response time of cells 4 to approximately 5 μm thick were investigated to use at wavelength of 1.3 to approximately 1.6 μm. Thick cells driven with this new method show response time less than 100 μsec, extinction ratios greater than 30 dB and memory ratios about 98%. The initial aging characteristics of cells driven with the new method indicate that this will result in longer cell lifetime.

Original languageEnglish
Pages (from-to)159-169
Number of pages11
JournalFerroelectrics
Volume149
Issue number1 -4 pt 3
Publication statusPublished - 1993
Externally publishedYes

Fingerprint

Liquid Crystals
communication networks
optical switching
Liquid crystals
Telecommunication networks
Ferroelectric materials
liquid crystals
Response time (computer systems)
Data storage equipment
Wavelength
Optical switches
cells
Aging of materials
Display devices
Electric potential
extinction
wavelengths
switches
life (durability)
requirements

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Engineering(all)

Cite this

Ferroelectric liquid crystal driving method for optical switching devices in communication networks. / Kohda, Shigeto; Shirai, Seiiti; Takeuchi, Yoshie; Yamauchi, Noriyoshi.

In: Ferroelectrics, Vol. 149, No. 1 -4 pt 3, 1993, p. 159-169.

Research output: Contribution to journalArticle

Kohda, Shigeto ; Shirai, Seiiti ; Takeuchi, Yoshie ; Yamauchi, Noriyoshi. / Ferroelectric liquid crystal driving method for optical switching devices in communication networks. In: Ferroelectrics. 1993 ; Vol. 149, No. 1 -4 pt 3. pp. 159-169.
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