Patent ID: 6738181
Filing Date: 2004-05-18
Classification: G02B,H04B

Abstract:
An optical sending apparatus comprising:a plurality of optical signal generating means for outputting polarized light having mutually different wavelengths; dispersion compensating means connected to at least one of said plurality of optical signal generating means, for performing compensation with a predetermined chromatic dispersion value to polarized light outputted from said optical signal generating means while maintaining the state of said polarized light, and outputting said dispersed polarized light; and multiplexing means for receiving said polarized light outputted from said dispersion compensating means and said polarized light outputted from said optical signal generating means without any of the polarized light having been multiplexed with other of the polarized light, and for multiplexing said received polarized light outputted from said dispersion compensating means with said received polarized light outputted from said optical signal generating means, or multiplexing mutually said received polarized light outputted from said optical signal generating means, said polarized light input to and output from the multiplexing means having adjacent wavelengths crossing orthogonal to each other, wherein said dispersion compensating means includes an optical device having first to third ports, wherein a first port is connected to said optical signal generating means, a second port outputs light inputted to said first port, and a third port outputs light inputted to said second port, a dispersion compensating device connected to said second port of said optical device, and having a predetermined dispersion value, and polarization converting means for receiving an input of said polarized light outputted from said dispersion compensating device, rotating said polarized light outputted from said dispersion compensating device, and inputting the polarized light again to said dispersion compensating device.