Optical communications – Multiplex – Optical switching
Reexamination Certificate
2006-06-27
2006-06-27
Payne, David C. (Department: 2638)
Optical communications
Multiplex
Optical switching
C398S048000, C398S045000
Reexamination Certificate
active
07068935
ABSTRACT:
Techniques for dilating and reverse dilating optical channels in an optical system are disclosed. In one particular exemplary embodiment, a technique for dilating optical channels may be realized as a method for dilating optical channels in a system having W optical frequencies. The method comprises receiving a plurality of optical channels each operating at a respective one of the W optical frequencies. The method also comprises converting the optical frequency of each of the plurality of optical channels into a respective converted optical frequency defined by Δ+δ.f, wherein f represents the optical frequency of each of the plurality of optical channels, and wherein δ=±1 and Δ are constant for all of the plurality of optical channels. The method further comprises directing each of the plurality of optical channels based at least in part upon the respective converted optical frequency of each of the plurality of optical channels.
REFERENCES:
patent: 6097517 (2000-08-01), Okayama
Jacob Sharony et al, “The Wavelength Dilation Concept in Lightwave Networks—Implementation and System Considerations”, Journal of Lightwave Technology, IEEE, vol. 11, No. 5/6, May/Jun. 1993, pp. 900-907.
N. Antoniades, et al., An Architecture for a Wavelength-Interchanging Cross-Connect Utilizing Parametric Wavelength Converters,Journal of Lightwave Technology,vol. 17, No. 7, Jul. 1999, pp. 1113-1132.
Jacob Sharony, et al., The Wavelength Dilation Concept In Lightwave Networks—Implementation and System Considerations,Journal of Lightwave Technology,vol. 11, No. 5/6, May/Jun. 1993, pp. 900-907.
S. J. B. Yoo, Wavelength Conversion Technologies for WDM Network Applications,Journal of Lightwave Technology,vol. 14, No. 6, Jun. 1996, pp. 955-966.
Dasylva Abel C.
Montuno Delfin Y.
Hunton & Williams LLP
Nortel Networks Limited
Payne David C.
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