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Digital glass forming of photonics

This paper investigates the Digital Glass Forming process for depositing single-mode optical fiber for waveguiding. The process utilizes a CO2 laser to heat the fiber to deposit onto a quartz substrate. This paper studies the effects of the feed rate and substrate scan speed on the fiber morphology. The relationship between the process parameters on the optical transmission through the fiber. The results show that as the fiber deforms to create a good contact with the substrate, the fiber core becomes elliptical. This reduces the overall transmission through the fiber. The dependence of the transmission on the radius of curvature of the printed track is also measured along with a preliminary demonstration of coupling between adjacent fibers.