What is the difference between PON, WDM and FTTH?

Question

Computer networks

How PON, WDM, and FTTH differ from each other

Answer 1

Wdm is generally a technology for increasing the number of beams in an optical fiber,
Pon connection via fiber optic
Ftth copper

Answer 2

These are completely different categories. Can be PON, WDM, and FTTH at the same time.
It's like: drinking coffee or vodka (PON or other),
drinking in a restaurant or park (FTTH or something else),
drinking from a mug or a disposable cup (WDM or two fibers).
FTTH is about where the optics reach (to the house).
WDM is about the fact that one fiber is used for receiving and transmitting, and not two separate ones.
PON is about the fact that the provider does not use active equipment in the entrance of the house (no need to reboot when freezing, no need to pay for electricity, no need to change when ports burn out, but there are also disadvantages).

Answer 3

PON passive (without the use of intermediate nodes with power supply) connection via FOCL. For example, a line with two fibers runs through the private sector, a branch goes from it to each house, an ONT box is placed in the house.
WDM allows you to transmit signals over one fiber at different frequencies, for example, in one direction at one wavelength, in the other - at another.
FTTx is the marketing name for where the FOCL will come and where the copper will come from (sometimes Fiber to the HOME/BUILDING/KERB/NODE).