Patent ID: 7120358
Filing Date: 2006-10-10
Classification: H04Q

Abstract:
1. Optical communication equipment comprising: a plurality of communication nodes having an optical signal transmitter for transmitting the optical signals and an optical label signals transmitter for transmitting the optical label signals carrying the control information concerning the routing of the optical signals respectively, for transmitting the optical signals and the corresponding optical label signals giving a relative transmission time lag; a router having wavelength demultiplexers connected to each of the communication nodes through the optical transmission line for separating the optical signals from the optical label signals, optical label signal receivers for receiving the optical label signals separated by one of the wavelength demultiplexers, optical splitters for branching the optical signals separated by one of the wavelength demultiplexers to a plurality of optical paths of a substantially the same length, a plurality of optical gates for routing by passing or intercepting the optical signal with respect to the corresponding optical path of the a plurality of optical paths according to the information carried by the optical label signal, said router pass or intercept the optical signal by selectively driving the a plurality of optical gates according to the control information of the optical label signal received by one of the optical label signal receivers; each of said communication nodes comprises: