Figure 1 | Scientific Reports

Figure 1

From: 3D printed and spiral lithographically patterned erbium-doped polymer micro-waveguide amplifiers

Figure 1The alternative text for this image may have been generated using AI.

Device schematic of the polymer waveguide amplifier fabricated using (a) photolithography and (b) direct 3D printing. Inset of (a) shows a scanning electron micrograph (SEM) of the trenches and an optical micrograph of the fabricated trenches. Inset of (b) shows SEMs of the 3D printed waveguide and the 3D printed suspended couplers used for fiber-waveguide coupling.

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