Electronically controlled agile lens-based broadband variable photonic delay line for photonic and radio frequency signal processing

    Authors

    N. A. Riza; S. A. Reza;P. J. Marraccini

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    DIGITAL MICROMIRROR DEVICE; MICROWAVE PHOTONICS; OPTICAL SENSOR; LASER; ARRAYS; LIQUID LENS; ATTENUATOR; GRATINGS; FILTERS; DESIGN; PHASE; Optics

    Abstract

    To the best of our knowledge, proposed for the first time is the design of an optically broadband variable photonic delay line (VPDL) using an electronically controlled variable focus lens (ECVFL), mirror motion, and beam-conditioned free-space laser beam propagation. This loss-minimized fiber-coupled VPDL design using micro-optic components has the ability to simultaneously provide optical attenuation controls and analog-mode high-resolution (subpicoseconds) continuous delays over a moderate (e. g., < 5 ns) range of time delays. An example VPDL design using a liquid-based ECVFL demonstrates up to a 1 ns time-delay range with > 10 dB optical attenuation controls. The proposed VPDL is deployed to demonstrate a two-tap RF notch filter with tuned notches at 854.04 and 855: 19 MHz with 22: 6 dB notch depth control via VPDL attenuation control operations. The proposed VPDL is useful in signal conditioning applications requiring fiber-coupled broadband light time delay and attenuation controls. (C) 2010 Optical Society of America

    Journal Title

    Applied Optics

    Volume

    49

    Issue/Number

    35

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    6718

    Last Page

    6725

    WOS Identifier

    WOS:000285184200008

    ISSN

    1559-128X

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