I have used cwdm extensively and it allows multiple wavelengths on a single fiber at line rate gig. What is different about PON?
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WDM over PON
What Nortel is doing is to allow each customer to get their own "channel" or (to be more precise - lambda) without their data interfering with the shared customers.
Let us assume that you have a fiber line with a data rate of 100Mbs to an office building; currently all of those customers share that bandwidth. Now, install a 40 "channel" WDM PON box at that building, 40 of those tenants each one could have their own 100 Mbs data stream.
Increased bandwith, with just a "box change".
That is what is so special about it.
After reading up on PON, I have learned that it differs in the f
After reading up on PON, I have learned that it differs in the fact that it uses a single fiber all the way to the customer. CWDM uses a single fiber for the long haul then drops out of a mux/demux on 2 fibers per wavelength (tx/rx)or "channel". Cwdm is more suited towards backbone since each channel is capable of line rate gig speeds. Aurora has a single fiber solution similar to this, with very similar specs But it requires an aurora cable plant.
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