Optical communications – Multiplex – Optical local area network
Reexamination Certificate
2007-04-17
2007-04-17
Sedighian, M. R. (Department: 2613)
Optical communications
Multiplex
Optical local area network
C398S003000
Reexamination Certificate
active
10266905
ABSTRACT:
A first optical fiber transmission path is used to transmit continuous-wave light for upstream signal light from the center node to each of the remote nodes, while a second optical fiber transmission path is used to transmit downstream signal light from the center node to each remote node and to transmit upstream signal light (obtained by modulating continuous-wave light) from each remote node to the center node. In this network, specific wavelength bandwidths are allocated to each remote node for the continuous-wave lights (for upstream signal lights) and the downstream signal lights, and the wavelength bandwidths for the continuous-wave lights (for upstream signal lights) and the downstream signal lights are alternately set.
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Akimoto Koji
Fujiwara Masamichi
Iwatsuki Katsumi
Kani Jun-ichi
Kawai Shingo
Fitch Even Tabin & Flannery
Nippon Telegraph and Telephone Corporation
Sedighian M. R.
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