Unraveling the Wonders of Optical Fibers: Light, Data, and Beyond

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🌐 Welcome to a journey through the fascinating world of optical fibers in our latest video! Optical fibers are at the heart of modern technology, enabling lightning-fast data transmission, medical advancements, and so much more. Get ready to explore their incredible uses and inner workings.

📡 What's in store:

1️⃣ A Universe of Applications: We'll kick things off by discussing the incredible ways optical fibers have revolutionized our world. From data transmission that powers the internet to the wonders of endoscopic surgery, optical fibers are everywhere.

2️⃣ The Science of Total Internal Reflection: Ever wondered how optical fibers guide light so effectively? We'll dive into the science of total internal reflection that occurs between the core and cladding, allowing light to travel with minimal loss.

3️⃣ Critical Angle Unveiled: Find out how to calculate the critical angle when you know the refractive indices of the core and cladding. We'll make complex physics concepts easy to understand.

4️⃣ The Role of Cladding: Learn why it's crucial for the cladding to have a lower refractive index than the core. We'll explain this principle and its impact on optical fiber performance.

5️⃣ Bending and Energy Loss: Visualize why bending an optical fiber can lead to energy loss. Our diagrams and explanations will make it crystal clear.

🔬 Whether you're a physics enthusiast, a tech lover, or just curious about the science behind modern marvels, this video is your gateway to understanding the world of optical fibers. Hit that like button, subscribe for more engaging physics content, and turn on the notification bell to stay updated with our latest videos! 💡🎓

Question 6

Which of the following is not a use of optical fibres?

(A) Endoscopic surgery - Optical fibres make “keyhole surgery” possible.
(B) The transmission of data - Optical fibres can transmit large amounts of data at high speed.
(C) The guiding of light waves - Optical fibres can be gently bent to curve a ray of light around a corner.
(D) The magnification of images - Optic fibres utilise reflection and refraction, but they are not used to magnify images. - correct answer

Question 7

Between which layers of an optical fibre does total internal reflection occur?

(A) The core and the cladding - The core has a high refractive index, and the cladding has a low one, allowing for total internal reflection. - correct answer
(B) The cladding and the sheath - The sheathe is a protective layer that tends to have a high refractive index than the cladding.
(C) The sheathe and the outside environment - There is no guarantee that the outside environment will have a lower refractive index than the sheathe.
(D) All of the above

Question 8

If the refractive index of an optical fibre’s core is 1.62, and that of the cladding is 1.52, find the critical angle at the boundary between them.

69.8 degrees

Question 9

Explain why it is essential that the cladding on an optical fibre has a lower refractive index than the fibre.

For total internal reflection, the cladding must have a refractive index lower than that of the core. Light trying to move into a higher refractive index will always succeed in refracting, and bending towards the normal.

Question 10

Draw a diagram to illustrate why bending an optical fibre can cause it to lose energy.