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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3643–3648

Switchable UWB pulse generation using a polarization maintaining fiber Bragg grating as frequency discriminator

Xinhuan Feng, Zhaohui Li, Bai-Ou Guan, C. Lu, H. Y. Tam, and P. K. A. Wai  »View Author Affiliations

Optics Express, Vol. 18, Issue 4, pp. 3643-3648 (2010)

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We propose and successfully demonstrate a novel approach to optically generate ultrawideband (UWB) pulse with switchable shape and polarity by using a polarization-maintaining fiber Bragg grating (PM-FBG) as frequency discriminator. Depending on the shape of the reflective spectrum of the PM-FBG, the system can function as a first- or second-order differentiator for the generation of Gaussian UWB monocycle or doublet pulses. Consequently, the shape and the polarity of the generated UWB pulse can be switched by simple adjustment of a polarization controller (PC). Gaussian monocycle and doublet pulses were successfully obtained with fractional bandwidths of about 188% and 152%, respectively. Higher-order UWB pulses with spectrum covering from 2.9 GHz to 9.8 GHz have also been obtained through adjustment of the PC.

© 2010 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(350.4010) Other areas of optics : Microwaves

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 14, 2010
Revised Manuscript: February 2, 2010
Manuscript Accepted: February 2, 2010
Published: February 4, 2010

Xinhuan Feng, Zhaohui Li, Bai-Ou Guan, C. Lu, H. Y. Tam, and P. K. A. Wai, "Switchable UWB pulse generation using a polarization maintaining fiber Bragg grating as frequency discriminator," Opt. Express 18, 3643-3648 (2010)

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