25-Channel Nematic Liquid-Crystal Optical Time-Delay Unit Characterization

    Authors

    N. A. Riza

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    IEEE Photonics Technol. Lett.

    Keywords

    Engineering, Electrical & Electronic; Optics; Physics, Applied

    Abstract

    A 25-channel, 1-bit, free-space, nematic liquid crystal (NLC) spatial light modulator (SLM)-based optical time delay unit (OTDU) is demonstrated with worst case electrical signal-to-noise ratios (SNR's) ranging from 50-60 dB for various delay/no-delay modes of operation and with a worst case -42.3-dB electrical channel isolation/crosstalk level. For comparison, single channel performance neglecting crosstalk noise but including within-channel leakage noise gives electrical SNR's from 74-85 dB, indicating that the leakage signal in this OTDU is minimal compared to crosstalk. To lower crosstalk, path-difference compensated imaging optics must be used by the OTDU.

    Journal Title

    Ieee Photonics Technology Letters

    Volume

    7

    Issue/Number

    11

    Publication Date

    1-1-1995

    Document Type

    Article

    Language

    English

    First Page

    1285

    Last Page

    1287

    WOS Identifier

    WOS:A1995TE02700021

    ISSN

    1041-1135

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