We show theoretical and experimental characterizations of a nanostructured gradient-index lens. The elliptical lens is a nonguiding element fabricated using the mosaic method, which is widely used for the fabrication of photonic crystal fibers. For the first time we show experimental data in the optics regime that confirm the effective medium approximation for discrete mosaic structures with subwavelength feature size. This opens the door for the development of general asymmetric gradient-index materials.
© 2010 Optical Society of America
Optical Design and Fabrication
Original Manuscript: September 16, 2009
Revised Manuscript: November 19, 2009
Manuscript Accepted: November 22, 2009
Published: January 11, 2010
F. Hudelist, J. M. Nowosielski, R. Buczynski, A. J. Waddie, and M. R. Taghizadeh, "Nanostructured elliptical gradient-index microlenses," Opt. Lett. 35, 130-132 (2010)