Significantly enhanced birefringence of photonic crystal fiber using rotational binary unit cell in fiber cladding

Y.-F. Chau, H.-H. Yeh, Din-ping Tsai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

42 Citations (Scopus)


We propose a novel high-birefringence index-guiding photonic crystal fiber (PCF). This PCF is composed of a solid silica core and a cladding with rotational squeezed-triangular-lattice elliptical air holes, which consist of binary unit cells. The birefringence of a fundamental mode in such a PCF is analyzed numerically using the finite element method. A binary unit cell in a PCF cladding that combines its rotational effects can enhance the birefringence as high as a magnitude of the order of 10-2. This study provides a new viewpoint for the characterization and design of a high-birefringence PCF. © 2007 The Japan Society of Applied Physics.
Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number41-44
Publication statusPublished - 9 Nov 2007
Externally publishedYes


  • Binary unit cell
  • Finite element method
  • High birefringence
  • Photonic crystal fiber (PCF)

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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