This book presents the intricate world of advanced optical sensors specifically tailored for aerospace applications. Starting with the fundamental principles of optical sensing technology, it navigates through the latest innovations and advancements that have shaped the industry. Readers will discover how optical sensors play a pivotal role in avionics, remote sensing, and structural health monitoring, enhancing both safety and efficiency. The book also addresses the challenges and limitations of currently available technologies while exploring future trends, including the integration of artificial intelligence. In addition to theoretical insights, the book includes case studies that showcase successful implementations, providing practical examples of how optical sensors are transforming aerospace operations. Ultimately, this book serves as a resource for engineers, researchers, and industry professionals looking to understand and advance the application of optical sensor technology in the aerospace sector.