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Proceedings Paper

Ferroelectric liquid crystals for polarization-based optical binary logic gates utilizing polarization-maintaining optical fibers
Author(s): Andrzej W. Domanski; Marek Wojciech Sierakowski; I. Stepinska; P. Stepinski; Tomasz R. Wolinski
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Paper Abstract

In polarization-based logic gates the binary logic values are represented by two orthogonal linear polarizations of light which can be interconverted by means of the programmable half-wave devices. We present a device consisted of a SSFLC-cell, a lithium niobate birefringent crystal and polarization-maintaining highly birefringent (HB) optical fibers. Due to the birefringent Li-Ni crystal attached to the SSFLC cell and two output HB fibers with proper oriented axes both orthogonal polarizations were spatially separated. In this way we obtained a non-absorptive binary logic gate which did not loose any information and enabled signal retrieving in any state. Power losses of the FLC logic gate were estimated in the order of 20 dB and contrast ratio between two stable logic states achieved a mean value 5 : 1.

Paper Details

Date Published: 1 August 1990
PDF: 6 pages
Proc. SPIE 1280, High Speed Phenomena in Photonic Materials and Optical Bistability, (1 August 1990); doi: 10.1117/12.20668
Show Author Affiliations
Andrzej W. Domanski, Warsaw Univ. of Technology (Poland)
Marek Wojciech Sierakowski, Warsaw Univ. of Technology (Poland)
I. Stepinska, Warsaw Univ. of Technology (Poland)
P. Stepinski, Warsaw Univ. of Technology (Poland)
Tomasz R. Wolinski, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 1280:
High Speed Phenomena in Photonic Materials and Optical Bistability
Dieter Jaeger, Editor(s)

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