In this video, we bust a common myth in fiber optics and reveal the truth about how duplex signal transmission works in both single-mode and multimode fiber. Learn about wavelength division duplexing (WDD), the science behind simultaneous send/receive data, and how this applies to real-world security camera systems. If you're setting up a fiber network, this knowledge is essential for designing smart, future-ready systems. 00:00What is Duplex Signal Transmission? Single Mode Fiber: Duplex on One Cable Multimode Fiber: Why It Needs Two Cables Real-World Example: Duplex in a Security Camera Setup Want to master more about Beginner’s Guide to Networking & Security? 📚 Click the link below to access the beginner-friendly and free course and level up your skills👇 Join our free tech community to learn, ask questions, and share ideas on IP cameras, PoE, wireless, fiber, and more! 👉 If you need any assistance with your project, please feel free to contact us here: Here is our solution page: Also, find FASTCABLING here: ------------------------------------ Facebook Page. Twitter. LinkedIn.