Open AccessReconfigurable microfluidic photonic crystal slab cavities
Author(s) -
Cameron L. C. Smith,
Uwe Bog,
Snjezana TomljenovicHanic,
Michael W. Lee,
Darran K. C. Wu,
Liam O’Faoláin,
Christelle Monat,
Christian Grillet,
Thomas F. Krauss,
Christian Karnutsch,
R. C. McPhedran,
Benjamin J. Eggleton
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.015887
Subject(s) - reconfigurability , photonic crystal , microfluidics , materials science , optics , fabrication , optoelectronics , slab , optofluidics , photonics , nanotechnology , physics , medicine , telecommunications , alternative medicine , pathology , geophysics , computer science
We demonstrate the spectral and spatial reconfigurability of photonic crystal double-heterostructure cavities in silicon by microfluidic infiltration of selected air holes. The lengths of the microfluidic cavities are changed by adjusting the region of infiltrated holes in steps of several microns. We systematically investigate the spectral signature of these cavities, showing high Q-factor resonances for a broad range of cavity lengths. The fluid can be removed by immersing the device in toluene, offering complete reconfigurability. Our cavity writing technique allows for tolerances in the infiltration process and provides flexibility as it can be employed at any time after photonic crystal fabrication.