| 摘要 |
A bidirectional multi-channel all-optical ring network is provided, this network comprising a number of nodes linked by optical cables, each of the node comprising two of WDM/WDDM, packet switching devices, and a node controller, in which network a first optical signal group of wavelength channel signals (for example, lambda 1, lambda 3, lambda 5, . . . ) are transferred in a counter-clockwise direction, and a second optical signal group of wavelength channel signals (for example, lambda 2, lambda 4, lambda 6, . . .) are transferred in a clockwise direction, thereby allowing an optical data signal to be transmitted through the channel of shorter distance.
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