Hi,
Thanks Sam and Ravil. I found these helpful but I still have confusion because TWDM is a combination of TDM PON (GPON & EPON) and WDM PON. There is another variation of WDM PON that uses passive splitters and AWG both which again makes it a combination of WDM PON and TDM PON. How basically we can actually differentiate between the two? What makes TWDM PON a Next Generation netwrok and different than the previous PONs? or TWDM PON is a new name given. I would appreciate help regarding this.
I am attaching a research paper that discusses the variations of WDM PON.