Physics and applications of photonic crystals

Ekmel Ozbay*, Irfan Bulu, Koray Aydin, Humeyra Caglayan, Kaan Guven

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


In this article, we investigate how the photonic band gaps and the variety of band dispersions of photonic crystals can be utilized for various applications and how they further give rise to completely novel optical phenomena. The enhancement of spontaneous emission through coupled cavity waveguides in a one-dimensional silicon nitride photonic microcrystal is investigated. We then present the highly directive radiation from sources embedded in two-dimensional photonic crystals. The manifestation of novel and intriguing optical properties of photonic crystals are exemplified experimentally by the negative refraction and the focusing of electromagnetic waves through a photonic crystal slab with subwavelength resolution.

Original languageEnglish (US)
Pages (from-to)87-95
Number of pages9
JournalPhotonics and Nanostructures - Fundamentals and Applications
Issue number2
StatePublished - Oct 2004


  • Coupled cavity waveguide
  • Left-handed material
  • Negative refraction
  • Photonic crystal
  • Spontaneous emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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