fiber optic lighting

[glassbox-design]

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

 

[aaronc]

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

 

[coolwaters]

i would be great if they have fiber optics that can filter out infrared light so we can use sunlight without the burning effect.

 

[glassbox-design]

hey aaron,

thanks for the response. i was looking at those utilizing 150 or 250w MH, i believe they are g12 bulbs.

 

[aaronc]

At what angle will the light be entering the fiber? What size of fiber? What are you trying to do?

Aaron

 

[aaronc]

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/index.php?main_page=index&cPath=90 Is that what you are trying to do?

Aaron

 

[aaronc]

This may also help.

Calculations: http://ateam.lbl.gov/Design-Guide/DGHtm/fiberopticfluxcalculation.htm