Analysis of lithium niobate electrooptic long-period waveguide gratings

Wei Jin, Kin Seng Chiang, Qing Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)


We present an approximate step-index waveguide model for the study of lithium-niobate (LiNbO3) electrooptic (EO) long-period waveguide grating filters. The model takes into account the non-uniform spatial distributions of the EO coefficient and the applied electric field. Using this model, we analyze in detail the effects of the grating and waveguide parameters on the performance of the filter with the objective of identifying a set of optimal design parameters for the realization of an efficient filter. Guided by the results from the analysis, we fabricated a 12-mm-long EO grating, which produced a 24-dB rejection band at a driving voltage of 49 V.
Original languageEnglish
Article number5431626
Pages (from-to)1477-1484
Number of pages8
JournalJournal of Lightwave Technology
Issue number10
Publication statusPublished - 12 May 2010
Externally publishedYes


  • Electrooptic filter
  • Gratings
  • Lithium niobate
  • Long-period gratings
  • Modeling
  • Optical filters
  • Optical waveguides
  • Waveguide filters

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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