Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
 ·North State Commun..
| reply to ATTek
Re: Brilliant Picture
said by ATTek  :said by raythompsontn : Fiber does not use "green light". Incorrect. Any light will travel through a fiber for a short distance. It needn't be a laser. If the pic isn't doctored in some way, then it's likely just a green light to make a nice publicity picture. The Christmas tree question was a valid one......do you really think all of the decorations around that use fiber optic lighting are harmful to your eyes? Yep.
Some short distance fiber equipment even uses low-power LED lighting instead of lasers.
--
Pretty Fly for a White Guy™ |
|
raythompsontn
join:2001-01-11
Oliver Springs, TN
| said by Matt :Some short distance fiber equipment even uses low-power LED lighting instead of lasers. An LED is not just "any light" and in fact produces a narrower spectrum than just "any light".
LED's are indeed used for short length communications. To get the most distance, with minimal losses, requires the much purer light of a laser system. The characteristics of the fiber are matched to the very narrow frequency of the laser. To obtain the speeds mentioned in the article requires a laser, even for the short distances. LEDs would simply not do the job.
Fibers used on Christmas displays are not very powerful, they are not lasers, and certainly do not come close to the affects of a true green laser.
»www.mayoclinic.org/news2005-rst/2800.html
»www.electrooptics.com/features/f···ure_id=6
If you want to know about the dangers of green lasers. A web search will quickly show that green lasers, used improperly, are indeed a significant hazard.
Looking at the output end of a high speed link driven by lasers is just plain stupid. |
|
Telukin
Premium
join:2004-03-26
UK | So article about fiber comms (that uses laser) coupled with a stock photo of someone holding some fiber and being illuminated by the light from it means that the light in the photo must be a laser? Come on, lighten up. |
|
raythompsontn
join:2001-01-11
Oliver Springs, TN
| said by Telukin :So article about fiber comms (that uses laser) coupled with a stock photo of someone holding some fiber and being illuminated by the light from it means that the light in the photo must be a laser? Come on, lighten up. The implication is there. And leave my weight out of this discussion. |
|
nitestop
join:2004-05-31
Ventura, CA |  reply to raythompsontn
 Yes Believe me laser damage to the eyes SUCKS.
Any laser will Damage your eyes, certain types are much more severe. It's the colors you cant see that are real bad. |
|
