character: Professor Lee
topic: Applications of Fiber Optics in Telecommunications
grade: 11
subject: Physics
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character: Dr. Smith
topic: Fundamentals of Optical Communication
grade: 11
subject: Physics
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character: Ms. Johnson
topic: Wireless Communication Technologies
grade: 11
subject: Physics
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character: Mr. Chen
topic: Signal Transmission and Modulation Techniques
grade: 11
subject: Physics
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