Optical packet node and optical packet add drop multiplexer

Optical communications – Multiplex – Wavelength division or frequency division

Reexamination Certificate

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Details

C398S059000, C398S082000, C398S097000

Reexamination Certificate

active

07031608

ABSTRACT:
An optical packet node for receiving and transmitting optical packets is disclosed. A multiwavelength band splitting device splits received optical packets transmitted via multiwavelength bands into at least three groups, each group including one multiwavelength band. A multiwavelength band combining device combine the three groups of multiwavelength bands. At least two optical packet add drop multiplexers are placed between the multiwavelength band splitting device and the multiwavelength band combining device. Each optical packet add drop multiplexer adds and drops at least one individual wavelength to a respective multiwavelength band group. A load balancing stage is connected to the optical packet add drop multiplexers to provide an interconnection between at least two wavelength bands.

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Harada K et al: “Optical Path Cross-Connect System Using Matrix Wavelength Division Multiplex Scheme” IEICE Transactions on Electronics, Institute of Electronics Information and Comm. Eng. Tokyo, Japan, vol. E82-C, No. 2, Feb. 1999, pp. 292-295.
Harada K et al.: “Hierarchical Optical Path Cross-Connect Systems for Large scale WDM Networks”, OFC/IOOC '99 Optical Fiber Communication Conference/International Conference on Integrated Optics and Optical Fiber Communication. San Diego, CA Feb. 21, 1999, Optical Fiber Communication Conference/International Conference on Integrated OP, Feb. 21, 1999, pp. WM55-1-WM55-3 (357-358).

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