Fiber-to-Chip Fusion

<p dir="ltr">This project investigates a low-loss, scalable method for attaching optical fibers directly to photonic chips using CO₂ laser fusion. Single-mode fibers were cleaved, aligned to chip waveguides using a 1550 nm laser, and fused in place with a Synrad FireStar V40 CO₂ laser. A microscope-assisted setup ensured precise positioning, and power measurements before and after fusion were used to calculate insertion loss. Bond strength was tested using a digital force gauge. Results demonstrated strong, stable fiber attachments and low insertion loss, supporting fusion splicing as a promising technique for compact, high-performance photonic packaging.</p>