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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 15 — Jul. 28, 2014
  • pp: 18232–18237

Tunable fractional-order differentiator using an electrically tuned silicon-on-isolator Mach-Zehnder interferometer

Aoling Zheng, Ting Yang, Xi Xiao, Qi Yang, Xinliang Zhang, and Jianji Dong  »View Author Affiliations

Optics Express, Vol. 22, Issue 15, pp. 18232-18237 (2014)

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We propose and experimentally demonstrate a tunable fractional order photonic differentiator using an on-chip electrically tuned Mach-Zehnder interferometer (MZI) structure. The phase shift at the resonant frequency of the MZI varies when applying different voltages, which can implement the fractional differentiation. Due to the large 3-dB bandwidth of the MZI, the differentiator is expected to have an operation bandwidth of several hundred GHz. The proposed fractional order differentiator is demonstrated experimentally. A Gaussian-like pulse with a bandwidth of about 200 GHz is temporally differentiated with a tunable order range from 0.83 to 1.03.

© 2014 Optical Society of America

OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(200.4740) Optics in computing : Optical processing
(320.5540) Ultrafast optics : Pulse shaping

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: May 26, 2014
Revised Manuscript: July 4, 2014
Manuscript Accepted: July 11, 2014
Published: July 21, 2014

Aoling Zheng, Ting Yang, Xi Xiao, Qi Yang, Xinliang Zhang, and Jianji Dong, "Tunable fractional-order differentiator using an electrically tuned silicon-on-isolator Mach-Zehnder interferometer," Opt. Express 22, 18232-18237 (2014)

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