Apni Physics

Attenuation in Optical Fiber-A Numerical Problem

Post author:Dr Sushil Kumar
Post published:27/01/2017
Post category:Class Notes
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Post last modified:11/10/2020
Reading time:2 mins read

Attenuation in Optical Fiber The major transmission characteristics for an optical fiber: 1. Attenuation 2. Dispersion Attenuation: Signal attenuation (fiber dB loss explained) within the optical fibers, as with metallic conductors,…

How to Find LASER Wavelength Using a Diffraction Grating in the Lab

Post author:Dr Sushil Kumar
Post published:27/01/2017
Post category:Class Notes
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Post last modified:11/10/2020
Reading time:3 mins read

How to find LASER (Light Amplification by Stimulated Emission of Radiation) wavelength using a Diffraction Grating in the Lab. For this just take a LASER source, a grating (here grating…

He-Ne gas Laser: Its Principle, Construction and Working

Post author:Dr Sushil Kumar
Post published:27/01/2017
Post category:Class Notes
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Post last modified:11/10/2020
Reading time:1 min read

The principle, Construction, and Working The Helium-Neon laser was the first continuous laser. It was invented by Javan, Bennett and Harriot in 1961. The laser has three components Laser medium:…

Carbon dioxide (CO2) gas Laser

Post author:Dr Sushil Kumar
Post published:27/01/2017
Post category:Class Notes
Post comments:2 Comments
Post last modified:11/10/2020
Reading time:3 mins read

Carbon dioxide (CO2) gas Laser The carbon dioxide laser (CO2 laser) was one of the earliest gas lasers invented by Kumar Patel of Bell Labs in 1964, is one of…