This course unlocks the secrets of fiber optics, the technology powering the modern internet and telecommunications. Students will master the fundamentals of lightwave transmission through optical fibers, including modal fields, attenuation, and dispersion. Additionally, students will delve into key communication components like transmitters, modulators, and receivers. Students will gain hands-on experience with software tools and measurement equipment to characterize fiber and device properties. The course culminates with students designing, building, and characterizing a fiber optic communications link.