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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 6 — Mar. 25, 2013
  • pp: 7014–7024

Compact, flexible and versatile photonic differentiator using silicon Mach-Zehnder interferometers

Jianji Dong, Aoling Zheng, Dingshan Gao, Lei Lei, Dexiu Huang, and Xinliang Zhang  »View Author Affiliations

Optics Express, Vol. 21, Issue 6, pp. 7014-7024 (2013)

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We propose and experimentally demonstrate the flexibility and versatility of photonic differentiators using a silicon-based Mach-Zehnder Interferometer (MZI) structure. Two differentiation schemes are investigated. In the first scheme, we demonstrate high-order photonic field differentiators using on-chip cascaded MZIs, including first-, second-, and third-order differentiators. For single Gaussian optical pulse injection, the average deviations of all differentiators are less than 6.5%. In the second scheme, we demonstrate multifunctional differentiators, including intensity differentiator and field differentiator, using an on-chip single MZI structure. These different differentiator forms rely on the relative shift between the probe wavelength and the MZI resonant notch. Our schemes show the advantages of compact footprint, flexible functions and versatile differentiation forms. For example, high order field differentiators can be used to generate complex temporal waveforms, such as high order Hermite-Gaussian waveforms. And intensity differentiators are useful for ultra-wideband pulse generation.

© 2013 OSA

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:
Optics in Computing

Original Manuscript: October 9, 2012
Revised Manuscript: January 24, 2013
Manuscript Accepted: February 22, 2013
Published: March 13, 2013

Jianji Dong, Aoling Zheng, Dingshan Gao, Lei Lei, Dexiu Huang, and Xinliang Zhang, "Compact, flexible and versatile photonic differentiator using silicon Mach-Zehnder interferometers," Opt. Express 21, 7014-7024 (2013)

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