Node used in photonic network, and photonic network

Details Node used in photonic network, and photonic network Node used in photonic network, and photonic network

2007-12-25

2007-12-25

Chan, Jason (Department: 2613)

Optical communications

Multiplex

Optical switching

C398S051000, C398S054000, C398S057000

Reexamination Certificate

active

10374053

ABSTRACT:
A multi-layer photonic network and nodes used therein are provided. The multi-layer photonic network comprises a packet network which performs switching and transfer in packet units, and a photonic network comprising optical transmission lines and photonic switches, and which accommodates the packet network. The multi-layer photonic network also has a two layer structure of optical wavelength links (O-LSPs) and packet links (E-LSPs). The O-LSPs are constituted by the optical transmission lines and comprise optical wavelength switching capability (LSC) which is capable of switching in optical wavelength units and packet switching capability (PSC) which is capable of switching in packet units at both their ends. The E-LSPs include the O-LSPs and PSCs at both their ends. Each node includes a section for automatically establishing an O-LSP according to an establishment request for an E-LSP while taking account of path information including path cost, resource consumption, and traffic quantity.

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