Optical communications – Transmitter and receiver system – Including optical waveguide
Reexamination Certificate
2004-09-24
2009-02-10
Sedighian, M. R. (Department: 2613)
Optical communications
Transmitter and receiver system
Including optical waveguide
C398S140000, C398S066000, C398S069000, C455S039000, C725S127000, C725S129000
Reexamination Certificate
active
07489872
ABSTRACT:
The present invention is an optical fiber system and method for carrying both CATV and Ethernet signals. The digital signals are translated into higher band by a direct up/down conversion so that analog signals and digital signals are treated as different frequency bands of electrical signals. Then, all the signals are mixed/divided by a power combiner/divider. And then, by using optoelectronic devices, the signals are processed with optoelectronic conversion. The converted optical signals are transmitted in a fiber or a related optical channel having low channel loss yet high capacity. To sum up, the present invention can transmit digital signals together with analog signals in a single wavelength to save the cost of an optical signal system and to provide a convenience on rearranging the system.
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Chan Yi-Jen
Chu Mu-Tao
Huang Fan-Hsiu
Lee Shin-Ge
Lee Shun-Tien
National Central University
Sedighian M. R.
Troxell Law Office PLLC
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