We demonstrate the fabrication of photonic crystal (PhC) cavities on optical nanofibers using femtosecond laser ablation. PhC cavities with cavity lengths varying from 0.54 to 3.43 mm are fabricated by controlling the profile of the nanocrater array formed on the nanofiber. Such PhC cavities show high transmission of 87% for a finesse of 39. For higher finesse values from 150 to 500, the transmission can still be maintained at 20%–25%. Due to the strong confinement of the field and the efficient coupling to single-mode optical fibers, such nanofiber-based PhC cavities may become an interface between quantum and classical networks.
© 2014 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: November 11, 2013
Revised Manuscript: November 29, 2013
Manuscript Accepted: November 29, 2013
Published: January 6, 2014
K. P. Nayak, Pengfei Zhang, and K. Hakuta, "Optical nanofiber-based photonic crystal cavity," Opt. Lett. 39, 232-235 (2014)