Singlemode Verlauf des Modes
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
||||||||||||||||||||||||||||||||||
|
Posted by on September 26, 2006, 1:49 am
Please log in for more thread options Yes, three, one "original" and two "theoretical. :) I think they' re theoretical and goes across the original. It' s like a coordinatesystem and the theoreticals can move around and can change their course instantly, I think. But it' s difficult for me to explain ;) | ||||||||||||||||||||||||||||||||||
|
Posted by on September 26, 2006, 1:53 am
Please log in for more thread options > John_H schrieb:
> > > "Three (3) modes?" > > Singlemode fibers have only one mode. Spiral modes can occur when the > wavelength is shorter than the fiber's design wavelength. > > Are these three modes directly observed or theoretical? Yes, three, one "original" and two "theoretical. :) I think they' re theoretical and goes across the original. It' s like a coordinatesystem and the theoreticals can move around and can change their course instantly, I think. But it' s difficult for me to explain ;) Sorry, for my bad english. Greet Sandro (greet?) | ||||||||||||||||||||||||||||||||||
|
Posted by Arnie Berkers on October 3, 2006, 1:01 am
Please log in for more thread options
alessandro.brandestini@hubersuhner.com schreef: > Hallo
> > Beim Singlemode geht ja nur ein Mode durch die Faser. > Wobei das eigentlich auf eine weise drei Modes sind, > die zusammen eine spiralf=F6rmige Bewegung ergeben. > Die zwei Achsen bzw Modes? k=F6nnen sich auch noch irgendwie > zueinander verschieben oder richtung =E4ndern? > > Eigenlich habe ich keine grosse Ahnung. > Darum bitte ich hier um erkl=E4rung des Singlemodes im Glasfaserkern. > > Gruss > > Sandro Hello, There are more polarization modes possible in SM transmission, imagine a 90 degrees shifted polarization. Also these modes can differ in velocity because of the non-homogenity of the fibre. The resulting effect on transmission is called polarization mode dispersion, PMD. In modern SM fibres PMD is an issue at 10 Gbit or higher systems for long distances. Is this what you mean? Arnie | ||||||||||||||||||||||||||||||||||
|
Posted by on October 3, 2006, 1:32 am
Please log in for more thread options
> Arnie Berkers schrieb:
> > > > Hello, > There are more polarization modes possible in SM transmission, imagine > a 90 degrees shifted polarization. Also these modes can differ in > velocity because of the non-homogenity of the fibre. The resulting > effect on transmission is called polarization mode dispersion, PMD. > In modern SM fibres PMD is an issue at 10 Gbit or higher systems for > long distances. > Is this what you mean? > Arnie Yes, I think so. Thanks Sandro | ||||||||||||||||||||||||||||||||||
| Similar Threads | Posted |
| Singlemode Verlauf des Modes | September 21, 2006, 4:13 am |
>
>
> "Three (3) modes?"
>
> Singlemode fibers have only one mode. Spiral modes can occur when the
> wavelength is shorter than the fiber's design wavelength.
>
> Are these three modes directly observed or theoretical?