Patent ID: 6810215
Filing Date: 2004-10-26
Classification: H04B,H04J

Abstract:
An optical repeater comprising:a wavelength converter converting a wavelength of an optical signal from a first optical network to a wavelength of a second optical network; and a bit rate converter converting a bit rate of the optical signal from the first optical network to a bit rate of the second optical network, wherein the optical repeater transmits the optical signal from the first optical network to the second optical network at the converted bit rate and wavelength, and the optical repeater is connected between a node of the first optical network and a node of the second optical network so that the optical signal is transmitted from the first optical network to the second optical network by passing from the node of the first optical network, then through the optical repeater, and then through the node of the second optical network, wherein the wavelength converter and the bit rate converter together comprise an optical/electrical converter converting the optical signal from the first optical network into an electrical signal, a demultiplexer demultiplexing the electrical signal into a plurality of electrical signals, a plurality of optical modulators optically modulating a plurality of optical signals at specific wavelengths with the plurality of electrical signals, respectively, to produce a plurality of modulated optical signals, and an optical coupler multiplexing the plurality of modulated optical signals together to produce a multiplexed signal which is output to the second optical network at the converted bit rate and wavelength.