Ferroelectric liquid crystals for polarization-based optical binary logic gates utilizing polarization-maintaining optical fibers

Andrzej W. Domanski; Marek Wojciech Sierakowski; I. Stepinska; P. Stepinski; Tomasz R. Wolinski

doi:10.1117/12.20668

1 August 1990 Ferroelectric liquid crystals for polarization-based optical binary-logic gates utilizing polarization-maintaining optical fibers

Andrzej W. Domanski, Marek Wojciech Sierakowski, I. Stepinska, P. Stepinski, Tomasz R. Wolinski

Author Affiliations +

Proceedings Volume 1280, High Speed Phenomena in Photonic Materials and Optical Bistability; (1990) https://doi.org/10.1117/12.20668
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

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.

Citation Download Citation

Andrzej W. Domanski, Marek Wojciech Sierakowski, I. Stepinska, P. Stepinski, and Tomasz R. Wolinski "Ferroelectric liquid crystals for polarization-based optical binary-logic gates utilizing polarization-maintaining optical fibers", Proc. SPIE 1280, High Speed Phenomena in Photonic Materials and Optical Bistability, (1 August 1990); https://doi.org/10.1117/12.20668

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