Hybrid analog/digital WDM access network with mini-digital optic

Details Hybrid analog/digital WDM access network with mini-digital optic Hybrid analog/digital WDM access network with mini-digital optic

1998-02-20

2000-11-14

Chan, Jason

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359125, 455 51, H04J 1402

Patent

active

061477869

ABSTRACT:
A hybrid, bi-directional, analog/digital WDM access network system, for transmitting/receiving a wavelength of analog signals and a plurality of wavelengths of digital signals which are communicated between a network and a plurality of users, includes a feeder/de/multiplexer for converting the wavelength of analog signals into electrical signals and de/multiplexing the wavelengths of digital signals into a plurality of one-wavelength of digital signals; a plurality of mini-digital optical nodes connecting individually to the feeder/de/multiplexer via a plurality of optic fibers, respectively, each of the mini-digital optical nodes converting one of the one-wavelength of digital signals into electrical signals; and wherein the analog and digital converted electrical signals are transmitted to the user. A method of downstream transmission from the network to the users and a method of upstream transmission from the users to the network includes steps of communicating the signals among the feeder/de/multiplexer, mini-digital nodes, optic fibers, a coax cable and/or a digital line.

REFERENCES:
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patent: 5202780 (1993-04-01), Fussganger
patent: 5808764 (1998-09-01), Frigo et al.
patent: 5864415 (1999-01-01), Williams et al.
patent: 5864748 (1999-01-01), Dail
patent: 5911019 (1999-06-01), Cohen

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