Applications of TOTAL INTERNAL RELFECTION 1. Optical Fibre: What are optical fibres? What is in a cable of optical fibre? Optical fibres are bundled in thick cables for use in communications. Sometimes they run along the sea-beds to link continents. Applications of total internal reflection Complied @ Prashant Bhushan Pandey Page 1 How is a message sent along optical fibre? Step 1 Step 2 Step 3 Step 4 Step 5 Step 1: A computer creates a message. Step 2: The transmitter encodes the message into a digital signal and sends it as a pulse of light or infrared. Step 3: The message travels along the optical fibre by total internal reflection and a repeater is used to stop the signal becoming weak (attenuation). Step 4: The message reaches the receiver which is an optical decoder and is decoded. Step 5: The decoded message is send to the destination computer. Applications of total internal reflection Complied @ Prashant Bhushan Pandey Page 2 Applications of total internal reflection Complied @ Prashant Bhushan Pandey Page 3 Applications of total internal reflection Complied @ Prashant Bhushan Pandey Page 4 (5) Total Internal reflection in a prism Applications of total internal reflection Complied @ Prashant Bhushan Pandey Page 5 Applications of total internal reflection Complied @ Prashant Bhushan Pandey Page 6 Applications of total internal reflection Complied @ Prashant Bhushan Pandey Page 7