Patent ID: 6429955
Filing Date: 2002-08-06
Classification: H04Q

Abstract:
An optical network, comprising:wavelength tunable optical transmitters of number MN, where N is an integer of two or more, each of which outputs an optical signal with arbitrary one of M wavelengths &lgr;1, &lgr;2, . . . , &lgr;M, where M is an integer of two or more, that are different from one another; a MNÃ—N optical switch whose input ports are connected to said respective wavelength tunable optical transmitters of number MN, and which allows optical signals input to different input ports to be output from its same output port; 1Ã—M optical wavelength demultiplexers of number N which output demultiplexing optical signal with wavelengths &lgr;1, &lgr;2, . . . , &lgr;M input from output ports of said MNÃ—N optical switch into each wavelength; and optical receivers of number MN which receive optical signals input from said 1Ã—M optical wavelength demultiplexers of number N.