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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 17,
  • Issue 6,
  • pp. 060603-
  • (2019)

Microwave photonic filter design and optimization based on stimulated Brillouin scattering using a directly modulated pump

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Abstract

We propose a general guideline on the design of a stimulated Brillouin scattering (SBS)-based microwave photonic filter (MPF) using a directly modulated pump. Filter gain profiles and passband ripples with waveform repetition periods of the driving current ranging from 2 to 100 ns are measured after the transmission of different fiber lengths. The results show that the filter performance has nothing to do with the fiber length, and the digital-to-analog converter bandwidth requirement for the driving current is no more than 500 MHz. Therefore, the low cost, flexible reconfiguration, and miniaturization characteristics make an SBS filter using a directly modulated pump a promising choice as an MPF.

© 2019 Chinese Laser Press

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