Fabrication of single‐mode polymeric waveguides using micromolding in capillaries

Micromolding in capillaries (MIMIC) has been used to fabricate arrays of single‐mode polymeric waveguides from several classes of polymeric materials (epoxies, polyrethanes, and polyacrylates) supported on Si/SiO 2 substrates. Waveguides clad with polymers having slightly lower refractive indices gave single‐mode output in the visible and near‐infrared regions. A typical waveguide structure exhibiting single‐mode behavior is shown in the Figure. magnified image