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Optical Fibres - A Level Physics

This video explains how optical fibres (or optical fibers if you're American) work for A Level Physics. Optical fibres use total internal reflection in order to send information. A light signal is sent down an optical fibre which can be received quite a distance away. The signal isn't perfect because different light rays travel different distances - this is called modal dispersion. The signal is put through a filter in order to get the original signal back out. Thanks for watching, Lewis This video is recommended for anyone studying A Level Physics in the following exam boards: AQA CIE Edexcel (don't need to know details) Edexcel IAL Eduqas IB OCR A OCR B WJEC _____________________________________ MY PHYSICS WEBSITES Find even more videos organised by exam board and topic at: GCSE Physics Online ► https://www.gcsephysicsonline.com A Level Physics Online ► https://www.alevelphysicsonline.com MY YOUTUBE CHANNEL Your support in watching this video has been invaluable! To contribute towards the free videos on YouTube, make a small donation at: ► https://www.paypal.me/physicsonline FOLLOW ME ► https://www.youtube.com/physicsonline... ►   / physicsonline   ►   / gcseandalevelphysicsonline   #waves #alevelphysics #physicsonline