Tunable photonic microwave filter using single-sideband modulation and a fiber grating in a Sagnac loop

G. Ning, Ping Shum, Sheel Aditya, H. Dong, Y. D. Gong, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review


We propose a novel, continuously tunable, photonic microwave notch filter configuration that uses, for the first time, single-sideband (SSB) modulated optical signals together with a linearly chirped fiber grating in a Sagnac loop. Measured results are presented to show a large notch rejection and an easily tunable free spectral range (FSR) by tuning the chirped fiber Bragg grating (FBG). The configuration enables doubling of time delay in the Sagnac loop. Use of SSB offers the potential to overcome chromatic dispersion.
Original languageEnglish
Article number015005
JournalOptical Engineering
Issue number1
Publication statusPublished - 1 Jan 2006
Externally publishedYes


  • Fiber Bragg grating
  • Microwave photonics
  • Optical transversal filter

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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