Uncooled laser generation of narrowcast CATV signal

Details Uncooled laser generation of narrowcast CATV signal Uncooled laser generation of narrowcast CATV signal

2001-06-29

2008-10-07

Singh, Dalzid (Department: 2613)

Optical communications

Multiplex

Broadcast and distribution system

C398S068000, C398S070000

Reexamination Certificate

active

07433598

ABSTRACT:
A cable television (CATV) distribution system, and a method of forming and using the CATV distribution system. In a first embodiment, a narrowcast optical signal is generated by an uncooled laser and converted by a receiver into a narrowcast electrical signal. In a second embodiment, a narrowcast optical signal generated by an uncooled laser is combined with a broadcast optical signal by an optical coupler at a hub of the CATV distribution system to generate a composite optical signal, which at a CATV node is: split into the broadcast and narrowcast optical components, respectively converted into broadcast and narrowcast electrical components, and combined into a composite electrical signal. In a third embodiment, a narrowcast optical signal is generated by an uncooled laser and then combined with the broadcast optical signal by a single receiver.

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