Recently introduced surface nanoscale axial photonics (SNAP) makes it possible to fabricate high-Q-factor microresonators and other photonic microdevices by dramatically small deformation of the optical fiber surface. To become a practical and robust technology, the SNAP platform requires methods enabling reproducible modification of the optical fiber radius at nanoscale. In this Letter, we demonstrate superaccurate fabrication of high-Q-factor microresonators by nanoscale modification of the optical fiber radius and refractive index using CO laser and UV excimer laser beam exposures. The achieved fabrication accuracy is better than 2Å in variation of the effective fiber radius.
Bibliographical note© 2011 Optical Society of America.
This paper was published in Optics letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-36-24-4824. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Sumetsky, M., DiGiovanni, D. J., Dulashko, Y., Fini, J. M., Liu, X., Monberg, E. M., & Taunay, T. F. (2011). Surface nanoscale axial photonics: robust fabrication of high-quality-factor microresonators. Optics Letters, 36(24), 4824-4826. https://doi.org/10.1364/OL.36.004824