GI-core polymer optical waveguide fabricated using soft-lithography method for optical circuit boards

We successfully fabricate large-sized (20-cm long) graded-index (GI) core polymer optical waveguides with high thermal durability, using the soft-lithography method. Furthermore, we demonstrate that the fabricated GI-core waveguide shows lower inter-channel crosstalk than the SI-core waveguides fabricated using the same method.