Passive Optical Networks

terminal

1

(RT) with multiplexing functions may be placed in the field to reduce the

total fiber mileage in the field. A PON network is characterized by a passive RT.

In an optical access network, the final drop to customers can be fiber (FTTH),

coaxial cable (as in an HFC system), twisted pairs or radio (FTTC). In fact, a

PON system can be used for FTTH or FTTC/FTTP depending on whether the

optical fiber termination (or the ONU location) is at the user, or in a neighbor-

hood and extended through copper or radio links to the user. In this book, we do

not make a distinction between FTTH and FTTC/FTTP.

2.2 TDM-PON VS WDM-PON

Figure 2.3 shows the architecture ...