Continuously Tunable Flat-Passband Microwave Photonic Notch Filter Based on Primary and Secondary Tap Distribution Impulse Response

Y Wang, Erwin Chan, X Wang, X Feng, B Guan

    Research output: Contribution to journalArticleResearchpeer-review

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    Abstract

    A new microwave photonic signal processor that has the ability to realize a continuously tunable high-resolution notch filters response is presented. It is based on designing the filter impulse response to have a primary and secondary tap distribution. With a proper design on the tap amplitudes, the notch filters passband can be flattened. The filter notch frequency can be also continuously tuned by controlling the phase shift of the secondary taps via a diffraction-based Fourier-domain optical processor. The notch filters has a robust response and high signal-to-noise-ratio (SNR) performance. Experimental results demonstrate that the new microwave photonic notch filters can simultaneously realize a flat passband of only a 1-dB ripple, a large free spectral range of 4.7 GHz, and a notch depth of over 40 dB while tuning the notch frequency. © 2015 IEEE.
    Original languageEnglish
    Pages (from-to)1-12
    Number of pages12
    JournalIEEE Photonics Journal
    Volume7
    Issue number1
    DOIs
    Publication statusPublished - Feb 2015

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    Notch filters
    taps
    notches
    Impulse response
    Photonics
    impulses
    Microwaves
    photonics
    filters
    microwaves
    central processing units
    Phase shift
    Signal to noise ratio
    Tuning
    Diffraction
    ripples
    signal to noise ratios
    phase shift
    tuning
    high resolution

    Cite this

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    title = "Continuously Tunable Flat-Passband Microwave Photonic Notch Filter Based on Primary and Secondary Tap Distribution Impulse Response",
    abstract = "A new microwave photonic signal processor that has the ability to realize a continuously tunable high-resolution notch filters response is presented. It is based on designing the filter impulse response to have a primary and secondary tap distribution. With a proper design on the tap amplitudes, the notch filters passband can be flattened. The filter notch frequency can be also continuously tuned by controlling the phase shift of the secondary taps via a diffraction-based Fourier-domain optical processor. The notch filters has a robust response and high signal-to-noise-ratio (SNR) performance. Experimental results demonstrate that the new microwave photonic notch filters can simultaneously realize a flat passband of only a 1-dB ripple, a large free spectral range of 4.7 GHz, and a notch depth of over 40 dB while tuning the notch frequency. {\circledC} 2015 IEEE.",
    keywords = "Frequency response, Impulse response, Microwaves, Notch filters, Optical signal processing, Phase shift, Phase shifters, Signal processing, Signal to noise ratio, Fourier domains, Free spectral range, High resolution, High signalto-noise ratios (SNR), Microwave Photonics, Notch frequencies, Optical processors, Proper design, Microwave filters",
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    language = "English",
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    publisher = "IEEE, Institute of Electrical and Electronics Engineers",
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    Continuously Tunable Flat-Passband Microwave Photonic Notch Filter Based on Primary and Secondary Tap Distribution Impulse Response. / Wang, Y; Chan, Erwin; Wang, X; Feng, X; Guan, B.

    In: IEEE Photonics Journal, Vol. 7, No. 1, 02.2015, p. 1-12.

    Research output: Contribution to journalArticleResearchpeer-review

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    AU - Wang, Y

    AU - Chan, Erwin

    AU - Wang, X

    AU - Feng, X

    AU - Guan, B

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    AB - A new microwave photonic signal processor that has the ability to realize a continuously tunable high-resolution notch filters response is presented. It is based on designing the filter impulse response to have a primary and secondary tap distribution. With a proper design on the tap amplitudes, the notch filters passband can be flattened. The filter notch frequency can be also continuously tuned by controlling the phase shift of the secondary taps via a diffraction-based Fourier-domain optical processor. The notch filters has a robust response and high signal-to-noise-ratio (SNR) performance. Experimental results demonstrate that the new microwave photonic notch filters can simultaneously realize a flat passband of only a 1-dB ripple, a large free spectral range of 4.7 GHz, and a notch depth of over 40 dB while tuning the notch frequency. © 2015 IEEE.

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    KW - High signalto-noise ratios (SNR)

    KW - Microwave Photonics

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    KW - Proper design, Microwave filters

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