Properties of PCF-based long period gratings

Zhi Wang, Jian Ju, Wei Jin, K. S. Chiang

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)


In a long period grating (LPG) made on a silica-based single material photonic crystal fiber (PCF), the effect of material dispersion on the resonance wavelength of the LPG is negligible. The resonance wavelength, the period and length of the LPG, and the diameter and pitch of the air-hole lattice of the PCF are found to obey a scaling law. Simulations show that the resonance wavelength has a non-monotonic dependence on the grating period and, for a particular grating period, there could exist dual resonance wavelengths and hence double transmission dips due to phase matching between the fundamental core mode and a cladding mode simultaneously at two wavelengths. This phenomenon may be explored for novel devices and sensor applications.
Original languageEnglish
Article number71
Pages (from-to)298-301
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5855 PART I
Publication statusPublished - 13 Dec 2005
Event17th International Conference on Optical Fibre Sensors, OFS-17 - Bruges, Belgium
Duration: 23 May 200527 May 2005


  • Beat length
  • Long period grating
  • Phase matching
  • Photonic crystal fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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