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Исследование амплитудной и фазовой модуляционных характеристик жидкокристаллического пространственного модулятора света в оптической системе голографической памяти

Исследование амплитудной и фазовой модуляционных характеристик жидкокристаллического пространственного модулятора света в оптической системе голографической памяти

Abstract

Optimal parameters of modulation schemes for data pages corresponding to requirements of the holographic memory system are given. The plots of amplitude and phase modulation characteristics obtained after processing of experimental data are analyzed; three points are determined for coding the unity and zero bits, which are optimal for implementation of hybrid nodulation. The parameters of the 3-D light modulator are indicated, at which it is shifted to the working point, i.e., the corresponding positions of the polarizer and analyzer and the level of voltage supplied to the plates of the liquid-crystal cell are given. Refs. 8. Figs. 13.

Приведены оптимальные параметры схемы модуляции страниц данных, соответствующих требованиям системы голографической памяти. Проанализированы графики амплитудной и фазовой модуляционных характеристик, полученных после обработки экспериментальных данных; определены три точки для кодирования битовых единиц и нулей, оптимальные для реализации гибридной модуляции. Указаны параметры пространственного модулятора света, при которых он сдвинут в рабочую точку, т.е. указаны соответствующие положения поляризатора, анализатора и уровень напряжения, поданного на обкладки жидкокристаллической ячейки.

Keywords

ГОЛОГРАФИЧЕСКАЯ ПАМЯТЬ, МИКРОГОЛОГРАММА, ГИБРИДНОЕ КОДИРОВАНИЕ, ЖИДКОКРИСТАЛЛИЧЕСКИЙ ПРОСТРАНСТВЕННЫЙ МОДУЛЯТОР СВЕТА, ПОЛЯРИЗАЦИЯ, МОДУЛЯЦИОННАЯ ХАРАКТЕРИСТИКА

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze