Field experiment with a hardened GPON reach extender with dual-parenting protection

Bidirectional, Raman Extended GPON with 50 km Reach and 1:64 Split Using Wavelength Stabilised Pumps

“…The standardised reach extension approaches require electrically powered units containing optical amplifiers [3] or OEO repeaters which detract somewhat from the benefits of PON systems. Furthermore, it is not always practical or cost effective to provide electrical power in remote or rural locations and servicing powered units presents operational issues and adds to the costs for a network operator.…”

XG-PON Raman reach extender based on quantum dot lasers

“…While SOAs could also be specifically designed to provide gain at any wavelength, they would have to be located in the outside plant of the PON in an electrically powered reach-extender box 3 . In contrast, Raman pumps can be located in the optical line terminal (OLT) at the central office with the PON transport fibre providing the gain media, thus preserving the fully passive nature of these networks.…”