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Understanding Numerical Aperture of Optical Fiber

This flipped classroom activity aims to help 1st year basic sciences students understand the concept and working principle of numerical aperture in optical fibers.

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Understanding Numerical Aperture of Optical Fiber

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  1. About me Name : S T Yogaraj Designation : Assistant Professor College : K.S.Rangasamy college of technology, Tiruchengode, Tamilnadu. FLIPPED CLASS ROOM ACTIVITY Domain : Basic Sciences Topic : Basic Sciences and Allied

  2. S T Yogaraj TOPIC – numerical aperture of an optical fiber COURSE – Fibre optics BASIC SCIENCES 1st YEAR UG STUDENTS K.S.RANGASAMY COLLEGE OF TECHNOLOGY, TAMILNADU

  3. Out-of-class Activity Design -1 Learning Objective(s) of Out-of-Class Activity At the end of watching videos students should be able to • Understood the concept of total internal reflection • Understood the construction and working principle of numerical aperture of a fibre Key Concept(s) to be covered Construction working

  4. Out-of-class Activity Design - 2 Main Video Source URL https://www.youtube.com/watch?v=CKkhR1RYNu0 License of Video Standard YouTube License - https://www.youtube.com/channel/UC7mlyK2BJj_mEI6BfcaSvMg Mapping Concept to Video Source TOTAL DURATION Provide total duration of video here** * It is recommended to provide customized shortened URLs, as they are easier to remember for future use. ** It is recommended that total duration of video watching and activity should not be more than 1Lecture duration.

  5. Out-of-class Activity Design - 3 Aligning Assessment with Learning Objective Expected activity duration 33 minutes ** It is recommended that total duration of activity and video should not be greater than one lecture duration.

  6. In-class Activity Design -1 Learning Objective(s) of In - Class Activity Numerical aperture – light gathering capacity of a fibre Key Concept(s) to be covered Manipulating the formula Doing the calculations distance from Fibre end to circular image on the screen

  7. In-class Activity Design -2 Active Learning activity(ies) that you plan to do Real world problem solving using – Think-pair-share Concept clarification using – peer instruction

  8. In-class Activity Design -2 Explain the strategy by giving details of What teacher will do? Why we are using semiconductor laser? [1.30] Why plastic fibre used instead of glass fibre? [2.08] How to do measurements? [3.10-3.35] 1. What Student will do? They will discuss about the different types of laser. Knowledge about the classification of optical fibers. Executing the formula

  9. In-class Activity Design -2 Justify why the above is an active learning strategy the students can find the numerical aperture and also the acceptance angle of a optical fibre by using laser as a source

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