Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2008-04-29
2008-04-29
Phan, Hanh (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S066000, C398S067000, C398S068000, C398S070000, C398S072000, C398S058000, C398S059000, C398S079000, C398S082000, C398S083000, C398S033000, C398S038000, C398S037000, C398S092000, C398S147000, C398S157000, C398S158000, C398S160000, C398S177000, C398S192000, C398S197000, C385S024000, C385S039000, C385S037000
Reexamination Certificate
active
10638954
ABSTRACT:
A hub for use in a passive optical network (PON) includes a transmission fiber on which an information-bearing optical signal is received, a double-cladded, rare-earth doped fiber located along the transmission fiber for imparting gain to the information-bearing optical signal, and a combiner having an output coupled to the transmission fiber and a plurality of inputs. The output is coupled to the transmission fiber such that optical energy at pump energy wavelengths but not signal wavelengths are communicated therebetween. At least one pump source is optically coupled to one of the inputs of the combiner for providing optical pump energy to the double-cladded, rare-earth doped fiber. An optical splitter is also provided. The optical splitter has an input coupled to the transmission fiber for receiving an amplified, information-bearing optical signal and a plurality of outputs for directing portions of the amplified, information-bearing optical signal to remote nodes in the PON.
REFERENCES:
patent: 5321707 (1994-06-01), Huber
patent: 5864644 (1999-01-01), DiGiovanni et al.
patent: 5907417 (1999-05-01), Darcie et al.
patent: 5914799 (1999-06-01), Tan
patent: 6104733 (2000-08-01), Espindola et al.
patent: 6181466 (2001-01-01), Franzoso et al.
patent: 6278816 (2001-08-01), Keur et al.
patent: 6351582 (2002-02-01), Dyke et al.
patent: 6381047 (2002-04-01), Frigo et al.
patent: 6434295 (2002-08-01), MacCormack et al.
patent: 2004/0076371 (2004-04-01), Bellemare et al.
Jasti Chandra Sekhar
Ramachandran Mani
Cullen Larry T.
General Instrument Corporation
Phan Hanh
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