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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 2 — Jan. 17, 2011
  • pp: 883–895

Linearized electrooptic microwave downconversion using phase modulation and optical filtering

Vincent R. Pagán, Bryan M. Haas, and T. E. Murphy  »View Author Affiliations

Optics Express, Vol. 19, Issue 2, pp. 883-895 (2011)

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We propose and demonstrate an electrooptic technique for relaying microwave signals over an optical fiber and downconverting the microwave signal to an intermediate frequency at the receiver. The system uses electrooptic phase modulation in the transmitter to impose the microwave signal on an optical carrier followed by re-modulation with a microwave local oscillator at the receiver. We demonstrate that by subsequently suppressing the optical carrier using a notch filter, the resulting optical signal can be directly detected to obtain a downconverted microwave signal. We further show that by simply controlling the amplitude of the microwave local oscillator, the system can be linearized to third-order, yielding an improvement in the dynamic range.

© 2011 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.5060) Fiber optics and optical communications : Phase modulation
(230.0250) Optical devices : Optoelectronics
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics

Original Manuscript: November 9, 2010
Revised Manuscript: December 22, 2010
Manuscript Accepted: December 24, 2010
Published: January 6, 2011

Vincent R. Pagán, Bryan M. Haas, and T. E. Murphy, "Linearized electrooptic microwave downconversion using phase modulation and optical filtering," Opt. Express 19, 883-895 (2011)

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