Compare Fiber Connector Types: SC, LC, FC, MTP, and MPO to find the best fit for your network's speed, density, and reliability needs. You will notice fiber connector types look different. They have different shapes and sizes. A fiber optic connector is a mechanical device used to align and join optical fibers, enabling light to pass through with minimal loss. The connector mechanically orients the fiber cores, allowing light to pass and travel through. This article provides a complete, practical guide to choosing the right fiber optic connector for modern networks.