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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 22, Iss. 5 — May. 1, 2005
  • pp: 913–916

Tunable microwave filter that uses a high-birefringent fiber and a differential-group-delay element

G. X. Ning, S. Aditya, P. Shum, N. Liu, Y. D. Gong, and Chao Lu  »View Author Affiliations


JOSA A, Vol. 22, Issue 5, pp. 913-916 (2005)
http://dx.doi.org/10.1364/JOSAA.22.000913


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Abstract

We propose and experimentally demonstrate a novel and simple photonic microwave notch filter that uses a high-birefringent fiber that gives a fixed differential group delay (DGD), together with a DGD element that gives a tunable DGD. This configuration overcomes the problems of optical coherence interference and chromatic dispersion, which may occur in schemes that use fiber delay lines or fiber gratings. Also presented is a theoretical analysis for the performance of the microwave filter that uses the present configuration. The present scheme provides a continuous tuning capability for changing the notch frequency. Measured notch rejection is greater than 40 dB . This scheme can operate over a wide wavelength range of the optical carrier. There is good agreement between experiment results and theoretical analysis.

© 2005 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(350.2460) Other areas of optics : Filters, interference
(350.4010) Other areas of optics : Microwaves

History
Original Manuscript: July 8, 2004
Revised Manuscript: October 29, 2004
Manuscript Accepted: November 18, 2004
Published: May 1, 2005

Citation
G. X. Ning, Y. D. Gong, Chao Lu, S. Aditya, P. Shum, and N. Liu, "Tunable microwave filter that uses a high-birefringent fiber and a differential-group-delay element," J. Opt. Soc. Am. A 22, 913-916 (2005)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-5-913

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