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  #1  
Old 01/06/2008, 11:11 AM
Flint&Eric Flint&Eric is offline
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fiber optic lighting

does anyone know what type of reduction can be expected from running light through fiber optic cable. i realize it depends on the cable and length, any rough numbers would be much appreciated. i have come across attenuation numbers, but how does a reduction in decibel/ft relate to par/lumen loss? as you can probably tell i have no expierence with fiber optics

cheers,

eric
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  #2  
Old 01/06/2008, 08:07 PM
aaronc aaronc is offline
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I might have it in a Fiber Optic OTDR manual, when I get a chance I'll have a look. The best I can do off the top of my head is .25db per Km @ 1550 nm. Or .35db per Km @ 1320 nm. That's assuming you are using singlemode fiber and a laser. What kind of light source are you using?

Aaron
  #3  
Old 01/07/2008, 02:12 AM
coolwaters coolwaters is offline
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i would be great if they have fiber optics that can filter out infrared light so we can use sunlight without the burning effect.
  #4  
Old 01/07/2008, 10:00 AM
Flint&Eric Flint&Eric is offline
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hey aaron,

thanks for the response. i was looking at those utilizing 150 or 250w MH, i believe they are g12 bulbs.
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"i like bubbly, and i love animals - so it works out well"

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  #5  
Old 01/08/2008, 11:22 PM
aaronc aaronc is offline
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At what angle will the light be entering the fiber? What size of fiber? What are you trying to do?

Aaron
  #6  
Old 01/09/2008, 12:41 AM
aaronc aaronc is offline
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The wavelength of the light source, power rating. Fiber type, Make and Manufacturer all play a role. I couldn't find the g12 light source that you are referring to. I did find this site though: http://trinorthlighting.com/Store/in...index&cPath=90 Is that what you are trying to do?

Aaron
  #7  
Old 01/09/2008, 12:46 AM
aaronc aaronc is offline
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This may also help.

Calculations: http://ateam.lbl.gov/Design-Guide/DG...alculation.htm
 


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