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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 15 — Aug. 1, 2008
  • pp: 1756–1758

Photonic microwave bandpass filter with improved dynamic range

Yu Yan and Jianping Yao  »View Author Affiliations

Optics Letters, Vol. 33, Issue 15, pp. 1756-1758 (2008)

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A technique to improve the dynamic range of a photonic microwave bandpass filter is proposed and experimentally demonstrated. The filter is implemented based on phase modulation to intensity modulation conversion using fiber Bragg gratings (FBGs) serving as frequency discriminators, with the optical carriers located at the left or right slopes of the FBGs, to generate positive or negative tap coefficients. The dynamic range of the photonic microwave bandpass filter is increased by reducing the optical-carrier-induced shot noise and relative intensity noise at the photodetector, which is realized by placing the optical carriers at the lower slopes of the FBG reflection spectra. A photonic microwave bandpass filter with an improvement in dynamic range of about 10 ‚ÄČ dB is demonstrated.

© 2008 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(350.4010) Other areas of optics : Microwaves

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: April 7, 2008
Revised Manuscript: June 15, 2008
Manuscript Accepted: June 19, 2008
Published: July 30, 2008

Yu Yan and Jianping Yao, "Photonic microwave bandpass filter with improved dynamic range," Opt. Lett. 33, 1756-1758 (2008)

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