Fibre Optic Demonstration Rod – Total Internal Reflection

Fibre optic demonstration rod designed to illustrate total internal reflection and the principles behind optical fibre communication systems.

This precision-machined acrylic rod provides a clear visual demonstration of how light can travel through a curved pathway using total internal reflection. When a laser beam is directed into the polished end of the rod, the light reflects repeatedly within the acrylic and follows the coiled path before emerging at the opposite end. This makes it an effective teaching aid for physics, optics and telecommunications studies.

Manufactured from high-quality Lucite acrylic, the rod is formed into two loops to clearly demonstrate that although light travels in straight lines, it can be guided around bends through internal reflection. Ideal for classroom demonstrations, STEM activities and physics investigations.

Key Features

• Demonstrates total internal reflection
• Models the operation of optical fibre communication systems
• Precision-machined from high-quality Lucite acrylic
• Polished ends for efficient light transmission
• Double-loop design clearly shows light travelling around curves
• Suitable for physics, optics and STEM education
• Highly visible classroom demonstration
• Reusable and durable construction

Educational Benefits

• Helps students understand fibre optic communication
• Demonstrates light transmission and reflection principles
• Supports investigations into optics and wave behaviour
• Provides a visual representation of real-world telecommunications technology

Applications

• Physics classroom demonstrations
• Optics investigations
• STEM and engineering activities
• Telecommunications and fibre optics education

Important Note

• For best results use with a red or green laser pointer
• Laser pointer not included 

Specifications

• Material: Lucite acrylic
• Principle Demonstrated: Total internal reflection
• Overall Size: 300mm x 120mm x 25mm
• Approximate Rod Length: 16 inches (406mm)