Multi-Channel Single-mode Polymer Waveguide Fabricated by the Mosquito Method Realizing Low Connection Loss with Single-mode Optical Fiber Arrays

In this paper, we design a polymer waveguide to satisfy the single- mode condition and fabricate it using the Mosquito method. In order to apply the single-mode waveguides as a connection component with single-mode fibers (SMFs) or with other optical components such as laser / photodetector arrays, there are many issues such as the core shape, the mode-field diameter (MFD) variation, and the accuracy of the core position and pitch. Hence, we experimentally and theoretically demonstrate that the Mosquito method is capable of fabricating polymer optical waveguides with single-mode cores and the above issues on the single-mode connections are addressed in this paper.