On-demand photonic crystal resonators

Myung Ki Kim, Ju Young Kim, Ju Hyung Kang, Byeong Hyeon Ahn, Yong Hee Lee

Research output: Contribution to journalReview articlepeer-review

18 Citations (Scopus)


Recent progress in the field of re-locatable photonic crystal resonators is discussed with a particular emphasis on the flexible scheme that employs highly-curved microfiber. In this scheme a spectrally-tunable high-quality-factor resonator can be defined repeatedly by physically moving a curved microfiber to a new position. When a curved microfiber is placed on top of a photonic crystal waveguide (or photonic crystal), a photonic well is newly created in the vicinity of the contact point. Inside of this photonic well, high-quality-factor resonant modes are generated at frequencies below the cutoff edge of the guided mode. The tapered microfiber is an integral part of a single mode optical fiber and efficient out-coupling is naturally obtained. The sub-nanometer spectral tuning capability that is available by changing the curvature of the microfiber is also an important characteristic and discussed. This spectrally- and spatially-reconfigurable photonic crystal resonator is expected to be a potential platform for photonic crystal based single photon sources, which enables accurate spatial overlap and spectral overlap with a single quantum dot, together with straightforward photon out-coupling to the fiber with high efficiency.

Original languageEnglish
Pages (from-to)479-495
Number of pages17
JournalLaser and Photonics Reviews
Issue number4
Publication statusPublished - 2011 Jul
Externally publishedYes


  • Microfiber
  • Microresonator
  • Photonic crystal
  • Reconfiguration
  • Tuning

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


Dive into the research topics of 'On-demand photonic crystal resonators'. Together they form a unique fingerprint.

Cite this