re: Partners in WDM-PONWDM-PON is realy a point-to-point symmectric access system, it's an over-kill for individual homes. It's more than ikely a "FTTB" (Fiber to the buiding", or for multiple dwelling Units type of deployments.
I hate to put words in another's mouth, but basically its cost. The original Novera system ran 100 Mb/s symmetrical to customers (mostly businesses in Korea). That is approximately the same bandwidth as you can get from a GPON and is not close to an Active Ethernet if you put a GigE to a home (I will put some more info in a PS).
The current system is supposed to run 1G per customer on the access side. I have not heard of any large scale deployments, but it is likely being trialed in Korea.
The thing is that this system (the first true WDM-PON that I am aware of) uses some custom optical parts that it is not obvious are competitive cost wise with PON transceivers (diplexers for both GEPON and GPON are sub-$20 in volume). So, the question is unless there is some drive to significant more bandwidth than what is the point of driving a lot more cost in the network.
seven
PS - Looking at strictly the Access line speed is probably a really bad way to evaluate bandwidths, if done alone. The other thing that should be factored in is the total bandwidth available across the platform (including any constraints from the backplane and uplinks). Having 1 Gb/s access ports when you have 500 customers sharing a 1 Gb/s uplink does not really provide 1 Gb/s access to the customer.
re: Partners in WDM-PONWDM PON is about 5 years away in US, plenty of bandwidth with just regular PON systems. Korea is different - government money and big guy's money...
The cost in PON systems IS the optics cost, particularly ONT optics cost. The rest of it is pretty minimal - an SOC to connect to an Ethernet port. As I have said before, one can get a GEPON or GPON indoor ONT that supports a GigE drop port for significantly under $100 - not make but buy for that price.
Thanks Seven. But.. Forgeting for now the confusing 500 customers sharing an uplink scenario...
If we magically pull transcievers out of your fear and uncertainty of the system (e.g. dirty nasty ol' hardware) cost, what are we left with and how do they rate in you OP?
It's Ethernet & provides ease of mixing dedicated P2P or FTTN/FTTB line
WDMPON is an overkill -it cannot compete with PON or PT-PT ACTIVE.
FACT NOT FICTION
stanley,
I hate to put words in another's mouth, but basically its cost. The original Novera system ran 100 Mb/s symmetrical to customers (mostly businesses in Korea). That is approximately the same bandwidth as you can get from a GPON and is not close to an Active Ethernet if you put a GigE to a home (I will put some more info in a PS).
The current system is supposed to run 1G per customer on the access side. I have not heard of any large scale deployments, but it is likely being trialed in Korea.
The thing is that this system (the first true WDM-PON that I am aware of) uses some custom optical parts that it is not obvious are competitive cost wise with PON transceivers (diplexers for both GEPON and GPON are sub-$20 in volume). So, the question is unless there is some drive to significant more bandwidth than what is the point of driving a lot more cost in the network.
seven
PS - Looking at strictly the Access line speed is probably a really bad way to evaluate bandwidths, if done alone. The other thing that should be factored in is the total bandwidth available across the platform (including any constraints from the backplane and uplinks). Having 1 Gb/s access ports when you have 500 customers sharing a 1 Gb/s uplink does not really provide 1 Gb/s access to the customer.
why bollocks?
stanley,
The cost in PON systems IS the optics cost, particularly ONT optics cost. The rest of it is pretty minimal - an SOC to connect to an Ethernet port. As I have said before, one can get a GEPON or GPON indoor ONT that supports a GigE drop port for significantly under $100 - not make but buy for that price.
Other than that they are big Ethernet switches.
seven
Thanks Seven. But.. Forgeting for now the confusing 500 customers sharing an uplink scenario...
If we magically pull transcievers out of your fear and uncertainty of the system (e.g. dirty nasty ol' hardware) cost, what are we left with and how do they rate in you OP?