Optoelectronic approach to adaptive radio-frequency transversal filter implementation with negative coefficients by using optical spectrum shaping

    Authors

    M. A. Arain;N. A. Riza

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    FIBEROPTIC DELAY-LINE; MICROWAVE FILTER; ELECTROOPTIC MODULATOR; PHASE; INVERSION; PHOTONIC FILTER; Optics

    Abstract

    A multitap negative and positive coefficient radio-frequency transversal filter is implemented by using a digital-micromirror-device spatial light modulator for weighting-factor control and a chirped fiber Bragg grating for time-delay control. The demonstrated architecture is reconfigurable, has high speed and low loss, and is robust through digital programmability for a wide variety of filtering algorithms. A design using an interleaver for differential detection realizes an ultrahigh bandwidth with a maximum processable frequency of 33.7 GHz. A multitap low-pass filter, a negative tap notch filter with 40 dB attenuation, and a multitap negative coefficient bandpass filter are experimentally demonstrated. The results are in agreement with theory. (c) 2006 Optical Society of America.

    Journal Title

    Applied Optics

    Volume

    45

    Issue/Number

    11

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    2428

    Last Page

    2436

    WOS Identifier

    WOS:000236712500010

    ISSN

    1559-128X

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