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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 22 — Nov. 4, 2013
  • pp: 27017–27022

Background-free millimeter-wave ultra-wideband signal generation based on a dual-parallel Mach-Zehnder modulator

Fangzheng Zhang and Shilong Pan  »View Author Affiliations

Optics Express, Vol. 21, Issue 22, pp. 27017-27022 (2013)

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A novel scheme for photonic generation of a millimeter-wave ultra-wideband (MMW-UWB) signal is proposed and experimentally demonstrated based on a dual-parallel Mach-Zehnder modulator (DPMZM). In the proposed scheme, a single-frequency radio frequency (RF) signal is applied to one sub-MZM of the DPMZM to achieve optical suppressed-carrier modulation, and an electrical control pulse train is applied to the other sub-MZM biased at the minimum transmission point, to get an on/off switchable optical carrier. By filtering out the optical carrier with one of the first-order sidebands, and properly setting the amplitude of the control pulse, an MMW-UWB pulse train without the residual local oscillation is generated after photo-detection. The generated MMW-UWB signal is background-free, because the low-frequency components in the electrical spectrum are effectively suppressed. In the experiment, an MMW-UWB pulse train centered at 25 GHz with a 10-dB bandwidth of 5.5 GHz is successfully generated. The low frequency components are suppressed by 22 dB.

© 2013 Optical Society of America

OCIS Codes
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: September 16, 2013
Revised Manuscript: October 21, 2013
Manuscript Accepted: October 25, 2013
Published: October 31, 2013

Fangzheng Zhang and Shilong Pan, "Background-free millimeter-wave ultra-wideband signal generation based on a dual-parallel Mach-Zehnder modulator," Opt. Express 21, 27017-27022 (2013)

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