Coupled photonic crystal nanobeam cavities
Optics
2009-05-04 v1
Abstract
We describe the design, fabrication, and spectroscopy of coupled, high Quality (Q) factor silicon nanobeam photonic crystal cavities. We show that the single nanobeam cavity modes are coupled into even and odd superposition modes, and we simulate the frequency and Q factor as a function of nanobeam spacing, demonstrating that a differential wavelength shift of 70 nm between the two modes is possible while maintaining Q factors greater than 10^6. For both on-substrate and free-standing nanobeams, we experimentally monitor the response of the even mode as the gap is varied, and measure Q factors as high as 200,000.
Keywords
Cite
@article{arxiv.0905.0109,
title = {Coupled photonic crystal nanobeam cavities},
author = {Parag B. Deotare and Murray W. McCutcheon and Ian W. Frank and Mughees Khan and Marko Loncar},
journal= {arXiv preprint arXiv:0905.0109},
year = {2009}
}
Comments
4 pages, 3 figures