WDM-PON having bus structure

Details WDM-PON having bus structure WDM-PON having bus structure

2007-12-18

2007-12-18

Sedighian, M. R. (Department: 2613)

Optical communications

Multiplex

Broadcast and distribution system

C398S071000, C398S070000

Reexamination Certificate

active

10854348

ABSTRACT:
Disclosure is a wavelength division multiplexed-passive optical network having a bus structure capable of connecting one central office to a plurality of remote nodes through one optical fiber. The wavelength division multiplexed-passive optical network (WDM-PON) having a bus structure includes a central office for downwardly transferring downstream optical signals having different wavelengths through a feeder fiber and for receiving upstream optical signals upwardly transferred through the feeder fiber; a plurality of remote nodes including at least a first remote node connected to the central office through the feeder fiber and a second remote node connected to the first remote node through the feeder fiber, dropping optical signals having corresponding wavelengths from among downwardly-transferred optical signals from the central office to at least one subscriber unit connected to each of the remote nodes, and adding the upstream optical signals, which are upwardly transferred from each subscriber unit, so as to upwardly transfer the upstream optical signals to the central office; and at least one subscriber unit for receiving the optical signals having the corresponding wavelengths dropped from each of the remote nodes and for upwardly transferring the upstream optical signals having different wavelengths through each of the remote nodes.

REFERENCES:
patent: 7155127 (2006-12-01), Akimoto et al.
patent: 2001/0048799 (2001-12-01), King et al.

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