Tunable optical delay using photonic crystal heterostructure nanocavities

D. O'Brien, A. Gomez-Iglesias, M. D. Settle, A. Michaeli, M. Salib, T. F. Krauss

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

We demonstrate tunable optical delay in a coupled resonator structure consisting of a chain of three heterostructure nanocavities. The group index of the device is measured using an interferometric technique, and the tuning is accomplished by the use of an optical pump that selectively heats one of the cavities in the array, altering the coupling and so changing the delay of the system. The speed of light in the device is varied over a range from c/75 to c/120 using effective pump powers below 100 mu W.

Original languageEnglish
Number of pages4
JournalPhysical Review. B, Condensed matter and materials physics
Volume76
DOIs
Publication statusPublished - Sept 2007

Keywords

  • SLOW LIGHT
  • WAVE-GUIDES
  • PULSE-COMPRESSION
  • BUFFERS
  • CHIP

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