Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xingyuan Xu
  • Jiayang Wu
  • Mehrdad Shoeiby
  • Thach G. Nguyen
  • Brent E. Little
  • Roberto Morandotti
  • Arnan Mitchell
  • David J. Moss

Detail(s)

Original languageEnglish
Article number096104
Journal / PublicationAPL Photonics
Volume2
Issue number9
Online published22 Sept 2017
Publication statusPublished - Sept 2017

Link(s)

Abstract

We propose and experimentally demonstrate a microwave photonic intensity differentiator based on a Kerr optical comb generated by a compact integrated micro-ring resonator (MRR). The on-chip Kerr optical comb, containing a large number of comb lines, serves as a high-performance multi-wavelength source for implementing a transversal filter, which will greatly reduce the cost, size, and complexity of the system. Moreover, owing to the compactness of the integrated MRR, frequency spacings of up to 200-GHz can be achieved, enabling a potential operation bandwidth of over 100 GHz. By programming and shaping individual comb lines according to calculated tap weights, a reconfigurable intensity differentiator with variable differentiation orders can be realized. The operation principle is theoretically analyzed, and experimental demonstrations of the first-, second-, and third-order differentiation functions based on this principle are presented. The radio frequency amplitude and phase responses of multi-order intensity differentiations are characterized, and system demonstrations of real-time differentiations for a Gaussian input signal are also performed. The experimental results show good agreement with theory, confirming the effectiveness of our approach.

Research Area(s)

  • SILICON MICRORING RESONATOR, WAVE-FORM GENERATION, FILTER, PHASE, CHIP, MODULATOR, PULSES, 1ST

Citation Format(s)

Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source. / Xu, Xingyuan; Wu, Jiayang; Shoeiby, Mehrdad et al.
In: APL Photonics, Vol. 2, No. 9, 096104, 09.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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