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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 26 — Dec. 24, 2007
  • pp: 18156–18161

Ultra-wideband pulse generation with flexible pulse shape and polarity control using a Sagnac-interferometer-based intensity modulator

Jianqiang Li, Kun Xu, Songnian Fu, Jian Wu, Jintong Lin, Ming Tang, and P. Shum  »View Author Affiliations

Optics Express, Vol. 15, Issue 26, pp. 18156-18161 (2007)

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We propose a novel scheme to generate ultra-wideband (UWB) pulse by employing a Sagnac interferometer comprising a phase modulator. This structure performs a dual-input and dual-output intensity modulator (IM), ultimately resulting in the flexibility to select the shape and the polarity of the generated UWB pulse. The experiment results show a good agreement with the theoretical investigation in terms of both pulse profile and spectrum, which conforms to the definition of UWB signals by the U.S. Federal Communications Commission. Furthermore, the proposed scheme is independent of the voltage bias point.

© 2007 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(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: October 26, 2007
Revised Manuscript: December 16, 2007
Manuscript Accepted: December 17, 2007
Published: December 19, 2007

Jianqiang Li, Kun Xu, Songnian Fu, Jian Wu, Jintong Lin, Ming Tang, and P. Shum, "Ultra-wideband pulse generation with flexible pulse shape and polarity control using a Sagnac-interferometer-based intensity modulator," Opt. Express 15, 18156-18161 (2007)

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