In-plane light propagation in Ta 2O 5/SiO 2 autocloned photonic crystals

Takashi Sato, Yasuo Ohtera, Naoto Ishino, Kenta Miura, Shojiro Kawakami

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


We investigate the characteristics of in-plane light propagation in 2-D photonic crystals fabricated by the autocloning method, by which multiple layers are stacked while preserving periodic surface corrugation. A numerical analysis shows that Ta 2O 5/SiO 2 autocloned photonic crystals are applicable to waveguides and lenses since a sufficient amount of change of the effective refractive index is obtained by adjusting the aspect ratio of the unit structure. It is also shown that the crystals have a wide bandgap applicable to Bragg reflectors and resonators. Experimental results reveal that in-plane propagation losses for the two directions are less than 1.4 dB/mm at λ = 1.55 μm, showing the crystals are useful for low loss in-plane devices.

Original languageEnglish
Pages (from-to)904-908
Number of pages5
JournalIEEE Journal of Quantum Electronics
Issue number7
Publication statusPublished - 2002 Jul
Externally publishedYes


  • Integrated optics
  • Photonic crystals
  • Resonators
  • Waveguide

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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