Characterization of a ferroelectric liquid crystal-based time delay unit for phased array antenna applications

    Authors

    N. A. Riza;N. Madamopoulos

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    SPATIAL LIGHT MODULATORS; SPEED; OPERATION; RATIO; Engineering, Electrical & Electronic; Optics; Telecommunications

    Abstract

    An experimental demonstration of a photonic time delay unit (PTDU) based on ferroelectric liquid crystal devices and Thompson polarization beamsplitters (TBS's) is presented, High signal-to-noise ratios (SNR's) ( > 96 dB) and optical polarization extinction ratios (ER, similar to 40 dB) are demonstrated for the PTDU using an active noise filter technique. Using a 5 V peak square wave switch drive signal, a 70 mu s switching speed is demonstrated for this PTDU that can be used in fast (e.g., 5000 beam/s) beam scanning phased array systems, A shorter switching speed of 35 mu s is also observed using a high 15 V peak transitional voltage driving signal.

    Journal Title

    Journal of Lightwave Technology

    Volume

    15

    Issue/Number

    7

    Publication Date

    1-1-1997

    Document Type

    Article

    Language

    English

    First Page

    1088

    Last Page

    1094

    WOS Identifier

    WOS:A1997XK07300004

    ISSN

    0733-8724

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