Ray, you can increase the fiber capacity without increasing the fiber by economic use of DWDM. There are methods,like HLIT's with distribute 1550 nm analog broadcast from the headend,and 1310 nm narrowcast for internet access. Using HLIT's architecture with 8 DWDM, you split each wavelength off,and send 10 QAM channels down it,each QAM channel going to each node,effectively increasing bandwidth. This is called their invisible hub architecture,and TCOMA is installing it in Dallas right now,and has installed it in 2 places each in Lousiana,and Washington State. This also allows you to provision services closer to the home,like data and internet.
I am just trying to point out,conventional wisdom might not be the best way,that DWDM and PON will eventually change the landscape in the Metro Area.
TWX is using conventional wisdom by adding fiber,TCI and COX are using HLIT's DWDM to add capacity. TWX is almost exclusively served by Toshiba,and their architecture to me is inferior.
Hiram |
