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Volume 32 Issue 2
Apr.  2010
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Microwave band-pass filters with negative coefficients based on photonics

  • Corresponding author: SUN Jun-qiang, jqsun@mailhust.edu.cn
  • Received Date: 2007-02-12
    Accepted Date: 2007-08-13
  • In order to implement negative coefficients filters based on photonics in optical communication,a novel and simple technique for obtaining negative coefficients was adopted by means of the conversion of phase-modulated to intensity-modulated.A two-tap microwave band-pass filter with a negative coefficient was demonstrated.The filter not only achieves the negative coefficients but also improves the performance.
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    CAPMANY J,ORTEGA B,PASTOR D.A tutorial on microwave photonic filters[J].IEEE Journal of Lightwave Technology,2006,24(1):201-229.
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    SALES S,CAPMANY J,MARTI J,et al.Experimental demonstration of fibre-optic delay line filters with negative coefficients[J].Electron Lett,1995,31(13):1095-1096.
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    YOST T,HERCZFELD P,ROSEN A,et al.Hybrid transversal filter utilizing MMIC and optical fiber delay lines[J].IEEE Microwave Guided Wave Letters,1995,5(9):287-289.
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    COPPINGER F,YEGNANARAYANAN S,TRINH P D,et al.All-opti-cal RF filter using amplitude inversion in a SOA[J].IEEE Transaction Microwave Theory & Tech,1997,45(8):1473-1477.
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    LI S,CHIANG S,GAMBLING W A,et al.A novel tunable all-optical incoherent negative tap fiber-optic transversal filter based on a DFB laser diode and fiber Bragg gratings[J].IEEE Photonics Technology Letters,2000,12(9):1207-1209.
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    CAPMANY J,PASTOR D,MARTINEZ A,et al.Microwave photonicfilters with negative coefficients based on phase inversion in an electro-optic modulator[J].Opt Lett,2003,28(16):1415-1417.
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    ZENG F,YAO J P.Investigation of phase-modulator-based all-optical bandpass microwave filter[J].IEEE Journal of Lightwave Technology,2005,23(4):1721-1728.
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    AGRAWAL G P.Nonlinear fiber optics & application of nonlinear fiber optics[M].3rd ed.Beijing:Publishing House of Electronics Industry,2003:363-365(in Chinese).
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Microwave band-pass filters with negative coefficients based on photonics

    Corresponding author: SUN Jun-qiang, jqsun@mailhust.edu.cn
  • 1. School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Abstract: In order to implement negative coefficients filters based on photonics in optical communication,a novel and simple technique for obtaining negative coefficients was adopted by means of the conversion of phase-modulated to intensity-modulated.A two-tap microwave band-pass filter with a negative coefficient was demonstrated.The filter not only achieves the negative coefficients but also improves the performance.

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