Investigation of microwave photonic filter based on multiple longitudinal modes fiber laser source

Yuan Cao, Feng Li, Xinhuan Feng, Chao Lu, Bai Ou Guan, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


We theoretically study the transfer function of a finite impulse response microwave photonic filter (FIR-MPF) system using a multi-wavelength fiber laser source by considering multiple longitudinal modes in each wavelength. The full response function with the response from longitudinal mode taps is obtained. We also discussed the influence of the longitudinal mode envelope and mode spacing on the performance of FIR-MPF. The response function of the longitudinal mode taps is fully discussed and the contribution is compared with the response of the carrier suppression factor for double sideband (DSB) modulation. The multiple longitudinal modes structure in the wavelength taps can be utilized to engineer the response of the FIR-MPF such that desirable features such as high side lode suppression ratio can be realized. The analysis provides a guideline for designing incoherent FIR-MPF systems.
Original languageEnglish
Pages (from-to)122-128
Number of pages7
JournalOptical Fiber Technology
Publication statusPublished - 1 Jan 2015


  • Microwave photonics filter
  • Multi-wavelength fiber laser
  • Multiple longitudinal modes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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