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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 2 — Jan. 15, 2008
  • pp: 98–100

Wideband RF photonic in-phase and quadrature-phase generation

Hossein Emami, Niusha Sarkhosh, Lam Anh Bui, and Arnan Mitchell  »View Author Affiliations

Optics Letters, Vol. 33, Issue 2, pp. 98-100 (2008)

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A photonic implementation of a practical broadband RF Hilbert transformer is demonstrated by using a four-tap transversal system. An almost ideal 90 ° phase shift with less than 3 dB of amplitude ripple has been achieved from 2.4 to 17.6 GHz . An efficient method to realize both transformed (quadrature-phase) and reference (in-phase) signal has been achieved by using a coarse wavelength division multiplexing coupler. Extension of the transformer bandwidth and further improvements of its implementation are discussed.

© 2008 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(350.4010) Other areas of optics : Microwaves
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 31, 2007
Revised Manuscript: November 20, 2007
Manuscript Accepted: November 29, 2007
Published: January 3, 2008

Hossein Emami, Niusha Sarkhosh, Lam Anh Bui, and Arnan Mitchell, "Wideband RF photonic in-phase and quadrature-phase generation," Opt. Lett. 33, 98-100 (2008)

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