Fig. 6
From: Modal properties of a strip-loaded horizontal slot waveguide
![Fig. 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs41476-017-0065-5/MediaObjects/41476_2017_65_Fig6_HTML.gif)
a SEM micrograph (slightly tilted top view) of a 1.2-μm-wide strip patterned on top of the horizontal slot waveguide. b Photographs of the fundamental and the first order transverse magnetic modes at the output of a 3-μm-wide waveguide (objective ×60, N.A. = 0.85)