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Laser Communication [PPT]

Telecommunication
PPTlogo Laser Communication [PPT] Name: Laser Communication PPT Material
Category: Telecommunication
File Type: Paper Presentation (*.ppt)
Source: http://www.qsl.net/

Content:

Laser Classes:
  • Class I – Sealed systems
  • Class II – Output 1mW
  • Class IIIa – Output 1mW – 5mW
  • Class IIIb – Output 5mW – 500mW Harmful to eyes, diffuse viewing OK
  • Class IV – Output 500mW – Harmful to skin and eyes, diffuse viewing hazardous
Diode Lasers:
  • Laser diodes emit an elliptical beam with astigmatism
  • Better units will include corrective lenses for astigmatism and to make the dot appear round
  • Neither of these problems are inherently bad for DX purposes but correcting them also improves divergence, a big win (more gain).

Get more information about Laser Classes, Diode Lasers PPT Paper Presentation on Laser Communication (*.ppt).

Download: Laser Communication.ppt

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