Air-mode photonic crystal ring resonator on silicon-on-insulator.

Abstract:

:In this report, we propose and demonstrate an air-mode photonic crystal ring resonator (PhCRR) on silicon-on-insulator platform. Air mode is utilized to confine the optical field into photonic crystal (PhC) air holes, which is confirmed by the three-dimensional finite-difference time-domain simulation. PhCRR structure is employed to enhance the light-matter interaction through combining the whispering-gallery mode resonance of ring resonator with the slow-light effect in PhC waveguide. In the simulated and measured transmission spectra of air-mode PhCRR, nonuniform free spectral ranges are observed near the Brillouin zone edge of PhC, indicating the presence of the slow-light effect. A maximum group index of 27.3 and a highest quality factor of 14600 are experimentally obtained near the band edge. Benefiting from the strong optical confinement in the PhC holes and enhanced light-matter interaction in the resonator, the demonstrated air-mode PhCRR is expected to have potential applications in refractive index sensing, on-chip light emitting and nonlinear optics by integration with functional materials.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Gao G,Zhang Y,Zhang H,Wang Y,Huang Q,Xia J

doi

10.1038/srep19999

subject

Has Abstract

pub_date

2016-01-28 00:00:00

pages

19999

issn

2045-2322

pii

srep19999

journal_volume

6

pub_type

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