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Optics Letters

Optics Letters


  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1077–1079

Digital broadband linearization technique and its application to photonic time-stretch analog-to-digital converter

Ali Fard, Shalabh Gupta, and Bahram Jalali  »View Author Affiliations

Optics Letters, Vol. 36, Issue 7, pp. 1077-1079 (2011)

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Suppression of distortion induced by nonlinearity in a dynamical system (such as an analog optical link) is very challenging, particularly for a wide-bandwidth signal. Conventional compensation techniques are computationally intensive, significantly limiting their realization in real-time applications. Here, we propose and demonstrate an efficient digital postprocessing technique to suppress distortions added to a wideband signal by a nonlinear system with memory effect. Experimentally, digital broadband linearization of the photonic time-stretch analog-to-digital converter (TSADC) is demonstrated. In case of TSADC, a dynamic range improvement of > 15 dB compared to conventional memory-less correction method is achieved.

© 2011 Optical Society of America

OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 5, 2011
Revised Manuscript: February 16, 2011
Manuscript Accepted: February 16, 2011
Published: March 18, 2011

Ali Fard, Shalabh Gupta, and Bahram Jalali, "Digital broadband linearization technique and its application to photonic time-stretch analog-to-digital converter," Opt. Lett. 36, 1077-1079 (2011)

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