Figure 4.

Various gold patterns transferred to a fiber facet: (a) SEM micrograph of 1 μm × 1 μm squares, 40 nm tall, separated by 9 μm and 1 μm. The dark curve running through the image is the boundary between core and cladding of the fiber. (b) 100 nm wide and 40 nm tall lines, 100 μm long, spaced by 10 μm, at 45° and 90° angles. These features were written as one continuous pattern, and remain connected after the transfer, with no tears or rips. (c) Split-ring resonators with sides 420 nm long, 40 nm tall, and line widths of 80 nm. Each resonator has a 60 nm gap, and they are spaced by 480 nm.