Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2005-12-27
2005-12-27
Sedighian, M. R. (Department: 2633)
Optical communications
Multiplex
Wavelength division or frequency division
C398S048000, C398S079000, C398S157000, C359S326000
Reexamination Certificate
active
06980743
ABSTRACT:
Transparent wavelength division multiplexing systems and methods include an array of wavelength converters receiving n input signals and shifting the wavelength of each input signal by a different amount so that n different wavelengths result. Each of the wavelength converters shifts the wavelength of the input signal by a known amount. The resulting signals may be combined and transmitted over a fiber. A passive (or active) wavelength splitter may be used to recover the signals from the fiber, and deliver the signals directly to one or more network devices. Receivers in the receiving router or switch generally are not wavelength-specific, so the n optical signals need not be shifted back to a common wavelength prior to the router or switch.
REFERENCES:
patent: 4880996 (1989-11-01), Peterson et al.
patent: 4885460 (1989-12-01), Bartholomew
patent: 5715076 (1998-02-01), Alexander et al.
patent: 6324318 (2001-11-01), Suzuki
patent: 6636342 (2003-10-01), Furusawa et al.
patent: 2001/0007509 (2001-07-01), Aso et al.
patent: 2002/0118415 (2002-08-01), Dasylva et al.
Stamatios V. Kartalopoulos: “Introduction to DWDM Technology Data in a Rainbow,” IEEE Press 2000.
M.A. Arbore et al.: Difference frequency mixing in LiNBO3/waveguides using an adiabatically tapered periodically-segmented coupling region;Lasers and Electro-Optics, 1996, CLEO '96,Jun. 2-7, 1996, pp. 120-121.
L.A. Eyres et al.: “MBE growth of laterally antiphase-pattern GaAs films using thin Ge layers for waveguide mixing,”Lasers and Electro-Optics, 1998, CLEO 98, Technical Digest;May 3-8, 1998; p. 276.
M. H. Chou et al.: “Bidirectional wavelength conversion between 1.3- and 1.5- m telecommunication bands using difference frequency mixing in LiNbO3waveguides with integrated coupling structures,”Lasers and Electro-Optics, 1998. CLEO 98, Technical Digest,May 3-8, 1998; pp. 475-476.
Harrity&Snyder, LLP
Juniper Networks, Inc.
Sedighian M. R.
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