Ultraflat widely tuned single bandpass filter based on stimulated brillouin scattering

Shuling Hu, Liwei Li, Xiaoke Yi, Changyuan Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)

Abstract

A novel ultraflat widely tunable single bandpass filter based on processing carrier-suppressed upper and lower sidebands separately and stimulated Brillouin scattering (SBS) is analyzed and presented. The microwave photonic filter features continuous and enhanced tunability via mapping the frequency change of RF oscillation doubly onto the central frequency shifting of the RF filter. Theoretical analysis shows the filter's magnitude response depends on modulation index of electro-optic modulator and SBS gain. Experimental results demonstrate a microwave photonic filter that has a single bandpass response, a narrow bandwidth of about 20.6 MHz, and a tuning range of 20 GHz with over 30-dB out-of-band rejection ratio and less than ±1.2-dB amplitude fluctuation during tuning.
Original languageEnglish
Article number6810791
Pages (from-to)1466-1469
Number of pages4
JournalIEEE Photonics Technology Letters
Volume26
Issue number14
DOIs
Publication statusPublished - 15 Jul 2014
Externally publishedYes

Keywords

  • microwave filters
  • Microwave photonics
  • stimulated Brillouin scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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