Design and evaluation of low-cross-talk twisted nematic liquid-crystal cells for optical switches

Kazuo Kimura, Noboru Naito, Seiiti Shirai, Noriyoshi Yamauchi

Research output: Contribution to journalArticle

3 Citations (Scopus)


A design method is proposed for low-cross-talk twisted nematic liquid-crystal optical switches. In this method the transmission spectrum of a liquid-crystal cell is simulated by using parameters such as wavelength, refractive index of the liquid crystal, cell thickness, and spacer density. With this simulation, it becomes possible to define the parameters that give the lowest cross talk at a given wavelength. Liquid-crystal cells are fabricated by using the simulation results, and the transmission spectra are characterized. A very low cross talk of −32 dB is achieved for a wavelength of 633 nm.

Original languageEnglish
Pages (from-to)1647-1649
Number of pages3
JournalOptics Letters
Issue number23
Publication statusPublished - 1992 Dec 1
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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