Broadband WDM filtter based on an improved long-period grating pair

Jin Hua Yan, Aping Zhang, Li Yang Shao, Sailing He

Research output: Journal article publicationConference articleAcademic researchpeer-review

1 Citation (Scopus)


We present the design and fabrication of a broadband all-fiber wavelength-division multiplexing (WDM) filter based on the long-period grating (LPG) technology. By utilizing the improved LPGs, i.e. the LPG with step-changed index modulation, an LPG with a 3-dB flat-bottom stop-band was designed with transfer matrix method. The fabrications of the designed LPG and the broadband WDM filter are also realized by using the point-by-point grating writing technique in the experiments.
Original languageEnglish
Article number601925
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6019 II
Publication statusPublished - 1 Dec 2005
Externally publishedYes
EventPassive Components and Fiber-based Devices II - Shanghai, China
Duration: 7 Nov 200510 Nov 2005


  • Long-period fiber gratings (LPGs)
  • Mach-Zehnder interferometer (MZI)
  • Wavelength-division multiplexing (WDM) filter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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