Chromatic dispersion compensation of a ferroelectric liquid crystal modulator for optical switching applications

2008 ◽  
Author(s):  
M-M. Sánchez-López ◽  
P. García-Martínez ◽  
I. Moreno
Keyword(s):  
Liquid Crystal ◽  
Optical Switching ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Ferroelectric Liquid Crystal

scholarly journals ELECTRO-OPTICAL SWITCHING OF THE MAIN OPTICAL AXIS OF A FERROELECTRIC LIQUID CRYSTAL SPIRAL NANOSTRUCTUREIN A PLANAR-ORIENTED DISPLAY CELL

Doklady BGUIR ◽  
2019 ◽  
pp. 21-27
Author(s):  
E. P. Pozhidaev ◽  
T. P. Tkachenko ◽  
A. V. Kuznetsov ◽  
I. N. Kompanets
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Optical Switching ◽  
Optical Axis ◽  
Modulation Frequency ◽  
Light Transmittance ◽  
Weak Electric Field ◽  
Ferroelectric Liquid Crystal ◽  
Light Modulation ◽  
Small Pitch

In a known display cell with the nematic liquid crystal (NLC) and interdigital electrodes on one of the glass substrates, the “In-Plane Switching” (IPS) mode is implemented, in which the NLC main optical axis reorients in a plane parallel to substrates, providing the most correct color reproduction at different angles view, up to 178 ° horizontally and vertically. Unfortunately, the creation of interdigital metal electrodes complicates and increases the technological process cost and causes a decrease in image contrast. At the same time, experimental results and calculations based on classical electro-optics of crystals indicate that electrooptical switching in the IPS mode is a natural and intrinsic feature of a conventional (with continuous electrodes) display cell with a planar-oriented layer of the ferroelectric liquid crystal (FLC), in which the effect of the deformed (by the electric field) helix FLC nanostructure is realized (DHF effect). In such a cell, the reorientation of the main optical axis under the influence of a weak electric field also occurs in the substrate plane if the FLC has a small pitch (about 100 nm or less) and a large tilt angle of molecules in the layer (about 38 ° or more). The dependences of the FLC cell light transmittance measured in this work, confirmed the achievement of the IPS electro-optical mode in the DHF FLC cell; moreover, the light modulation frequency was 1 kHz. Thus, while maintaining all the advantages of the IPS mode known in NLC, its implementation in FLC allows additionally obtaining technological advantages and multiple increase in modulation frequency.

scholarly journals In-plane Switching Deformed Helix Ferroelectric Liquid Crystal Display Cells

Crystals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 543 ◽  
Author(s):  
Evgeny P. Pozhidaev ◽  
Timofey P. Tkachenko ◽  
Artemy V. Kuznetsov ◽  
Igor N. Kompanets
Keyword(s):  
Liquid Crystal ◽  
Tilt Angle ◽  
Optical Switching ◽  
Liquid Crystal Display ◽  
Ferroelectric Liquid Crystal ◽  
Natural Feature ◽  
Helix Pitch ◽  
Sub Wavelength

In-plane electro-optical switching (IPS) is a natural feature of a conventional planar-aligned display cell based on the deformed helix ferroelectric liquid crystal effect (DHFLC-effect) with a sub-wavelength helix pitch, if the tilt angle is close to 40 degrees.

Characteristics of Ultrathin Ferroelectric Liquid Crystal Film and Optical Switching

1996 ◽  
Vol 35 (Part 1, No. 9B) ◽  
pp. 5050-5053 ◽  
Author(s):  
Sadahito Uto ◽  
Hideyo Ohtsuki ◽  
Masanori Ozaki ◽  
Katsumi Yoshino
Keyword(s):  
Liquid Crystal ◽  
Optical Switching ◽  
Ferroelectric Liquid Crystal ◽  
Crystal Film

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

1993 ◽  
Vol 149 (1) ◽  
pp. 159-169 ◽  
Author(s):  
Shigeto Kohda ◽  
Seiiti Shirai ◽  
Yoshie Takeuchi ◽  
Noriyoshi Yamauchi
Keyword(s):  
Liquid Crystal ◽  
Communication Networks ◽  
Optical Switching ◽  
Ferroelectric Liquid Crystal ◽  
Optical Switching Devices ◽  
Switching Devices

Optical switching of a metal-clad waveguide with a ferroelectric liquid crystal

1997 ◽  
Vol 36 (35) ◽  
pp. 9225 ◽  
Author(s):  
Masaya Mitsuishi ◽  
Shinzaburo Ito ◽  
Masahide Yamamoto ◽  
Thomas Fischer ◽  
Wolfgang Knoll
Keyword(s):  
Liquid Crystal ◽  
Optical Switching ◽  
Ferroelectric Liquid Crystal

Fast Optical Switching in Polymer Waveguide Using Ferroelectric Liquid Crystal

1990 ◽  
Vol 29 (Part 2, No. 5) ◽  
pp. L843-L845 ◽  
Author(s):  
Masanori Ozaki ◽  
Yutaka Sadohara ◽  
Takashi Hatai ◽  
Katsumi Yoshino
Keyword(s):  
Liquid Crystal ◽  
Optical Switching ◽  
Ferroelectric Liquid Crystal ◽  
Polymer Waveguide

Thresholdless, hysteresis-free, V-shaped, electro-optical switching for a ferroelectric liquid crystal cell

2004 ◽  
Vol 70 (1) ◽  
Author(s):  
Shwu-Yun Tsay Tzeng ◽  
T. Y. Lin ◽  
R. H. Huang ◽  
Jin-Jei Wu ◽  
Shune-Long Wu
Keyword(s):  
Liquid Crystal ◽  
Optical Switching ◽  
Liquid Crystal Cell ◽  
Ferroelectric Liquid Crystal ◽  
Crystal Cell
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